7- and 8-letter words ending with the suffix -OID with definitions
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185 total entries across 2 section(s)
Note: this list is built from spelling, not meaning. Some words here end with the right letters but do not really use the suffix in its usual sense. They are included on purpose: for Scrabble we suggest learning the suffix as a letter pattern rather than learning the meanings.
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | ACAROID | — | [a.] · resembling an acarid «a type of arachnid» |
| — | ADENOID | S | [n. -S] · an enlarged lymphoid growth behind the pharynx |
| — | AGATOID | — | < AGATE, [n. -S] · a variety of quartz - AGATOID [a.] |
| — | AMBROID | S | [n. -S] · a synthetic amber / [x] { amberoid ambroid § amberoids ambroids } |
| — | AMEBOID | — | < AMEBA, [n. -BAS or -BAE] · amoeba - AMEBAN AMEBIC AMEBOID [a.] / [x] { ameban amebic ameboid amoeban amoebic amoeboid } |
| — | AMYLOID | S | [n. -S] · a hard protein deposit resulting from degeneration of tissue |
| — | ANDROID | S | [n. -S] · a synthetic man / [x] { android droid § androids droids } |
| — | ANEROID | S | [n. -S] · a type of barometer |
| — | ANTHOID | — | [a.] · resembling a flower |
| — | CACTOID | — | < CACTUS, [n. -TI or -TUSES] · a plant native to arid regions - CACTOID [a.] |
| — | CESTOID | S | [n. -S] · cestode «a tapeworm» / [x] { cestode cestoid § cestodes cestoids } |
| — | CHELOID | S | [n. -S] · keloid «a scar caused by excessive growth of fibrous tissue» / [x] { cheloid keloid § cheloids keloids § cheloid keloid keloids § keloidal } |
| — | CHOROID | S | [n. -S] · a membrane of the eye / [x] { chorioid choroid § chorioids choroids } |
| — | CIRSOID | — | [a.] · varicose |
| — | CISSOID | S | [n. -S] · a type of geometric curve |
| — | COCCOID | S | [n. -S] · a spherical cell or body |
| — | COLLOID | S | [n. -S] · a type of chemical suspension |
| — | CORMOID | — | < CORM, [n. -S] · a stem of certain plants - CORMOID CORMOUS CORMLIKE [a.] |
| — | CRICOID | S | [n. -S] · a cartilage of the larynx |
| — | CRINOID | S | [n. -S] · a marine animal |
| — | CTENOID | — | [a.] · comblike «resembling a comb» |
| — | CYCLOID | S | [n. -S] · a geometric curve |
| — | CYSTOID | S | [n. -S] · a cyst-like~ structure |
| — | DELTOID | S | [n. -S] · a shoulder muscle / [x] { deltoid deltoideus § deltoidei deltoids § deltoid deltoideus } |
| — | DENTOID | — | [a.] · resembling a tooth |
| — | DERMOID | S | [n. -S] · a cystic tumor |
| — | DESMOID | S | [n. -S] · a very hard tumor |
| — | DIPLOID | SY | [n. -S] · a cell having the basic chromosome number doubled |
| — | DISCOID | S | [n. -S] · a disk / [x] { disc discoid disk § discoids discs disks § disced discing discs disked disking disks } |
| — | EMEROID | S | [n. -S] · emerod «a tumor» / [x] { emerod emeroid § emerods emeroids } |
| — | ERICOID | — | [a.] · resembling heath |
| — | ETHMOID | S | [n. -S] · a bone of the nasal cavity |
| — | EUPLOID | SY | [n. -S] · a cell having three or more identical genomes |
| — | FACTOID | S | [n. -S] · a brief news item |
| — | FIBROID | S | [n. -S] · a fibroma «a benign tumor composed of fibrous tissue» |
| — | FUNGOID | S | [n. -S] · a growth resembling a fungus |
| — | GLENOID | — | [a.] · having the shallow or slightly cupped form of a bone socket |
| — | GLOBOID | S | [n. -S] · a spheroid |
| — | GOBIOID | S | [n. -S] · a fish of the goby family |
| — | HAEMOID | — | [a.] · hemoid «hemal» / [x] { haemal haematal haemic haemoid hemal hematal hematoid hemic hemoid } |
| — | HAPLOID | SY | [n. -S] · a cell having only one set of chromosomes / [x] { haploids § haploid haploidic } |
| — | HISTOID | — | [a.] · pertaining to connective tissue |
| — | HYALOID | S | [n. -S] · a membrane of the eye |
| — | HYDROID | S | [n. -S] · a polyp |
| — | HYENOID | — | < HYENA, [n. -S] · a wolflike mammal - HYENIC HYENINE HYENOID [a.] / [x] { hyaenas hyenas § hyaenic hyenic hyenine hyenoid } |
| — | HYPNOID | — | [a.] · pertaining to hypnosis or sleep |
| — | LABROID | S | [n. -S] · a marine fish |
| — | LENTOID | S | [n. -S] · an object shaped like a lens (=lentoids) |
| — | LIANOID | — | [a.] · pertaining to a liana |
| — | LITHOID | — | [a.] · resembling stone |
| — | MASTOID | S | [n. -S] · the rear portion of the temporal bone |
| — | MATTOID | S | [n. -S] · a mentally unbalanced person |
| — | MYELOID | — | [a.] · pertaining to bone marrow |
| — | NAEVOID | — | < NAEVUS, [n. -VI] · nevus «a birthmark» - NAEVOID [a.] / [x] { naevoid nevoid } |
| — | NEGROID | S | ! [n. -S] · member of the black race |
| — | NEUROID | — | [a.] · resembling a nerve |
| — | OBOVOID | — | [a.] · ovoid with the narrow end at the base |
| — | OCELOID | — | < OCELOT, [n. -S] · an American~ wildcat - OCELOID [a.] |
| — | OCHROID | — | [a.] · ocherous «containing or resembling ocher» / [x] { ocherish ocheroid ocherous ochery ochreous ochroid ochrous ochry } |
| — | OIDIOID | — | < OIDIUM, [n. OIDIA] · a type of fungus - OIDIOID [a.] (=oidioid) |
| — | OSTEOID | S | [n. -S] · uncalcified bone matrix |
| — | PERCOID | S | [n. -S] · a spiny-finned~ fish |
| — | PHYTOID | — | [a.] · resembling a plant |
| — | PLACOID | S | [n. -S] · a fish having platelike scales |
| — | PYGMOID | — | < PYGMY, [n. -MIES] · a small person - PYGMAEAN PYGMEAN PYGMOID PYGMYISH [a.] / [x] { pigmy pygmy § pigmies pygmies § pigmy pygmaean pygmean pygmoid pygmy pygmyish } |
| — | QUINOID | S | [n. -S] · a chemical compound |
| — | RHIZOID | S | [n. -S] · a rootlike structure |
| — | SARCOID | S | [n. -S] · a disease of horses |
| — | SIALOID | — | [a.] · resembling saliva |
| — | SIGMOID | S | [n. -S] · an S-shaped curve in a bodily part |
| — | SIMIOID | — | [a.] · simious «pertaining to simians» / [x] { simioid simious } |
| — | SPAROID | S | [n. -S] · a sparid «any of a family of marine fishes» / [x] { sparid sparoid § sparids sparoids } |
| — | SPIROID | — | [a.] · resembling a spiral |
| — | SPOROID | — | [a.] · resembling a spore |
| A | STEROID | S | [n. -S] · a type of chemical compound |
| — | STYLOID | S | [n. -S] · a slender projection of bone (=styloids) |
| — | TABLOID | S | [n. -S] · a small newspaper |
| — | THEROID | — | [a.] · resembling a beast |
| — | THYROID | S | [n. -S] · an endocrine gland |
| — | TYPHOID | S | [n. -S] · an infectious disease |
| — | VALGOID | — | < VALGUS, [n. -ES] · the position of a joint that is abnormally turned outward - VALGOID [a.] |
| — | VISCOID | — | [a.] · somewhat viscid |
| — | XIPHOID | S | [n. -S] · a part of the sternum |
| — | ZEBROID | — | [a.] · pertaining to a zebra |
| — | ZINCOID | — | [a.] · zincic «pertaining to zinc» / [x] { zincic zincky zincoid zincous zincy zinky } |
| — | ZOMBOID | — | [a.] zombielike «resembling, like, or characteristic of a zombie» |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | ACTINOID | S | [n. -S] · an actinide «any of a series of radioactive elements» / [x] { actinide actinoid § actinides actinoids } |
| — | ALKALOID | S | [n. -S] · a type of chemical compound |
| — | AMBEROID | S | [n. -S] · ambroid «a synthetic amber» / [x] { amberoid ambroid § amberoids ambroids } |
| — | AMMONOID | S | [n. -S] · ammonite / [x] { ammonite ammonoid § ammonites ammonoids § ammonite ammonoid } |
| — | AMOEBOID | — | < AMOEBA, [n. -BAS or -BAE] · a unicellular microscopic organism - AMOEBAN AMOEBIC AMOEBOID [a.] / [x] { ameban amebic ameboid amoeban amoebic amoeboid } |
| — | ANCONOID | — | < ANCON, [n. -ES] · the elbow - ANCONAL ANCONEAL ANCONOID [a.] / [x] { ancon ancone § ancones § anconal anconeal anconoid } |
| — | ARILLOID | — | < ARIL, [n. -S] · an outer covering of certain seeds - ARILED ARILLATE ARILLOID [a.] / [x] { aril § arils § ariled arillate arilloid } |
| — | ASCONOID | — | < ASCON, [n. -S] · a type of sponge - ASCONOID [a.] |
| — | ASTEROID | S | [n. -S] · a type of celestial body |
| — | ATHETOID | — | [a.] · affected with a type of nervous disorder |
| — | AUTACOID | S | [n. -S] · a hormone / [x] { autacoid autocoid § autacoids autocoids } |
| — | AUTOCOID | S | [n. -S] · autacoid «a hormone» / [x] { autacoid autocoid § autacoids autocoids } |
| — | BOTRYOID | — | [a.] · resembling a cluster of grapes / [x] { botryoid botryose } |
| — | CANCROID | S | [n. -S] · a skin cancer |
| — | CARDIOID | S | [n. -S] · a heart-shaped~ curve |
| — | CATENOID | S | [n. -S] · a geometric surface |
| — | CENTROID | S | [n. -S] · the center of mass of an object |
| — | CERATOID | — | [a.] · hornlike «resembling a horn» / [x] { ceratoid keratoid } |
| — | CHOREOID | — | [a.] · resembling chorea «a nervous disorder» |
| — | CHORIOID | S | [n. -S] · choroid «a membrane of the eye» / [x] { chorioid choroid § chorioids choroids } |
| — | CLUPEOID | S | [n. -S] · a clupeid «a fish of the herring family» / [x] { clupeid clupeoid § clupeids clupeoids } |
| — | CONCHOID | S | [n. -S] · a type of geometric curve |
| — | CORACOID | S | [n. -S] · a bone of the shoulder girdle |
| — | CORONOID | — | [a.] · crown-shaped~ |
| — | COTYLOID | — | [a.] · cup-shaped~ |
| — | DENDROID | S | [n. -S] · a fossil marine invertebrate (=dendroids) |
| — | ECHINOID | S | [n. -S] · a spiny marine animal |
| — | ELYTROID | — | < ELYTRON, [n. -TRA] · a hardened forewing of certain insects - ELYTROID ELYTROUS [a.] / [x] { elytroid elytrous } |
| — | EMBRYOID | S | [n. -S] · a mass of tissue that resembles an embryo |
| — | EMULSOID | S | [n. -S] · a liquid dispersed in another liquid |
| — | GABBROID | — | < GABBRO, [n. -BROS] · a type of rock - GABBROIC GABBROID [a.] |
| — | GROUPOID | S | [n. -S] · a type of mathematical set |
| — | GYNECOID | — | [a.] · resembling a woman |
| — | HELICOID | S | [n. -S] · a type of geometrical surface |
| — | HEMATOID | — | [a.] · resembling blood / [x] { haemal haematal haemic haemoid hemal hematal hematoid hemic hemoid } |
| — | HOMINOID | S | [n. -S] · a manlike animal |
| — | HUMANOID | S | [n. -S] · something having human form |
| — | HYRACOID | S | [n. -S] · a hyrax «a small, harelike mammal» |
| — | INDIGOID | S | [n. -S] · a blue dye |
| — | ISTHMOID | — | [a.] · isthmic «pertaining to an isthmus» |
| — | KERATOID | — | [a.] · horny / [x] { ceratoid keratoid } |
| — | LAMBDOID | — | < LAMBDA, [n. -S] · a Greek letter - LAMBDOID [a.] |
| — | LEMUROID | S | [n. -S] · a lemur / [x] { lemur lemuroid § lemuroids lemurs } |
| — | LIGULOID | — | < LIGULA, [n. -LAE or -LAS] · a strap-shaped~ organ or part - LIGULAR LIGULATE LIGULOID [a.] / [x] { ligular ligulate liguloid } |
| — | LIMULOID | S | [n. -S] · a horseshoe crab |
| — | LYMPHOID | — | < LYMPH, [n. -S] · a body fluid containing white blood cells - LYMPHOID LYMPHOUS [a.] (=lymphous) |
| — | MANATOID | — | < MANATEE, [n. -S] · an aquatic mammal - MANATOID [a.] |
| — | MEDUSOID | S | [n. -S] · medusa |
| — | MELANOID | S | [n. -S] · a dark pigment |
| — | MUCINOID | — | < MUCIN, [n. -S] · a protein secreted by the mucous membranes - MUCINOID MUCINOUS [a.] / [x] { mucin § mucins § mucinoid mucinous } |
| — | MYCELOID | — | < MYCELIUM, [n. -LIA] · the vegetative portion of a fungus - MYCELIAL MYCELIAN MYCELOID [a.] / [x] { mycele mycelium § myceles mycelia § mycelial mycelian myceloid } |
| — | NOCTUOID | — | < NOCTUID, [n. -S] · a night-flying~ moth - NOCTUOID [a.] |
| — | NUCLEOID | S | [n. -S] · the DNA-containing~ area of certain cells |
| — | OCHEROID | — | [a.] · ocherous «containing or resembling ocher» / [x] { ocherish ocheroid ocherous ochery ochreous ochroid ochrous ochry } |
| — | OCTOPOID | — | [a.] · resembling an octopus |
| — | ODONTOID | S | [n. -S] · a toothlike vertebral projection |
| — | PARANOID | S | [n. -S] · one affected with paranoia / [x] { paranoiac paranoic paranoid § paranoiacs paranoics paranoids § paranoiac paranoic paranoid } |
| — | PAROTOID | S | [n. -S] · a gland of certain toads and frogs |
| — | PETALOID | — | [a.] · resembling a petal / [x] { petaline petaloid } |
| — | PHYLLOID | S | [n. -S] · a leaflike plant part |
| — | PLASMOID | S | [n. -S] · a type of high energy particle |
| — | POLYPOID | — | [a.] · resembling a polyp |
| — | PRISMOID | S | [n. -S] · a geometric solid |
| — | PYRANOID | — | < PYRAN, [n. -S] · a chemical compound - PYRANOID [a.] |
| — | PYRENOID | S | [n. -S] · a protein body of certain lower organisms |
| — | RACEMOID | — | [a.] · pertaining to a raceme «a mode of arrangement of flowers along an axis» |
| — | RESINOID | S | [n. -S] · a resinous substance |
| C | RETINOID | S | [n. -S] · a compound analogous to vitamin A |
| — | RHOMBOID | S | [n. -S] · a type of geometric figure |
| — | SCAPHOID | S | [n. -S] · a bone of the wrist |
| — | SCHIZOID | S | [n. -S] · a person affected with a type of psychotic disorder / [x] { schizo schizoid schizophrenic § schizoids schizophrenics schizos § schizo schizoid schizophrenic } |
| — | SCINCOID | S | [n. -S] · one of a family of smooth, short-limbed~ lizards |
| — | SCIUROID | — | [a.] · resembling a squirrel |
| — | SCLEROID | — | [a.] · sclerous «hardened» / [x] { scleroid sclerous } |
| — | SEPALOID | — | < SEPAL, [n. -S] · one of the individual leaves of a calyx - SEPALED SEPALINE SEPALLED SEPALOID SEPALOUS [a.] / [x] { sepal § sepals § sepaled sepaline sepalled sepaloid sepalous } |
| — | SESAMOID | S | [n. -S] · a nodular mass of bone or cartilage |
| — | SILUROID | S | [n. -S] · a silurid «any of a family of catfishes» / [x] { silurid siluroid § silurids siluroids } |
| — | SINUSOID | S | [n. -S] · a mathematical curve |
| — | SISTROID | — | [a.] · included between the convex sides of two intersecting curves |
| — | SLEAZOID | S | [n. -S] · a person of low morals or character / [x] { sleazo sleazoid § sleazoids sleazos } |
| — | SOLENOID | S | [n. -S] · a type of electric coil |
| — | SPHENOID | S | [n. -S] · a bone of the skull |
| — | SPHEROID | S | [n. -S] · a type of geometric solid |
| — | SYCONOID | — | < SYCON, [n. -S] · a type of sponge - SYCONOID [a.] |
| — | TAENIOID | — | [a.] · of or relating to a member of the genus Taenia «cestodes» |
| — | TAPIROID | S | [n. -S] · a Tapiroidea~, a superfamily of perissodactyl mammals comprising the tapirs and extinct related forms |
| — | TECHNOID | S | [n. -S] · a technician / [x] { tec tech techie technician technoid tekkie § techies technicians technoids techs tecs tekkies § teched techs } |
| — | TERATOID | — | < TERATISM, [n. -S] · a malformed fetus - TERATOID [a.] |
| — | TETANOID | — | < TETANUS, [n. -ES] · an infectious disease - TETANOID [a.] / [x] { tetanus § tetanuses § tetanal tetanical tetanoid } |
| — | THALLOID | — | < THALLUS, [n. -LI or -LUSES] · a plant body without true root, stem, or leaf - THALLOID [a.] |
| — | THYREOID | — | [a.] · pertaining to the thyroid |
| — | THYRSOID | — | < THYRSUS, [n. -SI] · a type of flower cluster - THYRSOID [a.] / [x] { thyrse thyrsus § thyrses thyrsi § thyrsoid } |
| — | TRENDOID | S | [n. -S] · a trendy person |
| — | TRICHOID | — | [a.] · hairlike «resembling a hair» |
| — | TRIPLOID | SY | [n. -S] · a cell having a chromosome number that is three times the basic number |
| — | TROCHOID | S | [n. -S] · a type of geometric curve |
| — | TUBEROID | — | [a.] · pertaining to a tuber |
| — | VIBRIOID | — | < VIBRIO, [n. -RIOS] · any of a genus of bacteria shaped like a comma - VIBRIOID [a.] / [x] { vibrio vibrion § vibrions vibrios § vibrioid } |
| — | VIRUSOID | S | [n. -S] · a particle of RNA~ associated with some plant viruses |
Copyright © 2026 Mitch Bayersdorfer · AGPL-3.0 · Thanks to Joe Petree for his definitions for these lists. · Detailed Attributions