Real Words Without Definition
This one is a judgement call.
A scientific or medical word built out of Greek and Latin roots. This is the biggest group in the list, about a third of everything.
Medicine gives us anconitis, inflammation of the elbow, and adenalgy, pain in a gland. Chemistry gives us acetylsalicylic. Anatomy, botany and zoology all do the same thing.
Once you know the roots they are completely predictable, which is why no dictionary lists them all. You can keep making new ones forever.
18,355 words · sorted A to Z · each with a line on why it is here
Matches the word itself, not the note beside it. Case does not matter.
| Word, sorted Z to A | Field and meaning |
|---|---|
| onychophorous | zoology, bearing claws |
| onychophyma | medical, thickening of the nails |
| onychotrophy | medical, nutrition of the nails |
| onym | nomenclature, a technical name |
| onymal | nomenclature, of an onym |
| onymancy | divination by means of names |
| onymatic | nomenclature, relating to names |
| onymize | nomenclature, to give a name to |
| onymy | nomenclature, the use of names |
| onyxis | medical, an ingrowing nail |
| ooangium | botany, an egg-bearing sac |
| oocystaceous | botany, of the algal Oocystaceae |
| ooglea | biology, gelatinous coating of eggs |
| oogoniophore | botany, stalk bearing an oogonium |
| ookinesis | biology, nuclear changes in the egg |
| oometric | biology, of the measurement of eggs |
| oophoralgia | medical, pain in the ovary |
| oophorauxe | medical, enlargement of the ovary |
| oophoreocele | medical, hernia containing an ovary |
| oophorhysterectomy | medical, removal of ovaries and uterus |
| oophorocele | medical, hernia of the ovary |
| oophoroepilepsy | medical, epilepsy of ovarian origin |
| oophoromalacia | medical, softening of the ovary |
| oophoromania | medical, insanity from ovarian disease |
| oophororrhaphy | medical, suture of the ovary |
| oophorostomy | medical, opening made in an ovarian cyst |
| oopod | zoology, an egg-bearing appendage |
| oopodal | zoology, of an oopod |
| ooporphyrin | chemistry, porphyrin of eggshells |
| ooscope | instrument for examining eggs |
| ooscopy | examination of eggs by light |
| oosporous | botany, bearing oospores |
| oostegitic | zoology, of the oostegite brood plate |
| ootocoid | zoology, of the Ootocoidea (marsupials) |
| ootocoidean | zoology, of the Ootocoidea |
| ootocous | zoology, egg-laying, oviparous |
| opalinine | zoology, of the Opalinidae |
| ophicephaloid | zoology, like the snakehead fishes |
| ophichthyoid | zoology, like the snake eels |
| ophidiomania | medical, morbid craving about snakes |
| ophidologist | zoology, a student of snakes |
| ophidology | zoology, the study of snakes |
| ophiography | zoology, description of snakes |
| ophiologic | zoology, of the study of snakes |
| ophiomorph | zoology, a snake-like form |
| ophionid | entomology, of the wasp genus Ophion |
| ophionine | entomology, of the Ophioninae |
| ophiophilism | zoology, love of snakes |
| ophiophoby | medical, fear of snakes |
| ophiouride | zoology, of the brittle stars |
| ophresiophobia | medical, morbid fear of odours |
| ophthalmagra | medical, sudden pain in the eye |
| ophthalmatrophia | medical, atrophy of the eye |
| ophthalmencephalon | anatomy, optic parts of the brain |
| ophthalmetrical | medical, of eye measurement |
| ophthalmiac | medical, one affected with ophthalmia |
| ophthalmiater | medical, an eye doctor |
| ophthalmiatrics | medical, treatment of eye disease |
| ophthalmious | medical, affected with ophthalmia |
| ophthalmitic | medical, of ophthalmitis |
| ophthalmoblennorrhea | medical, purulent discharge from the eye |
| ophthalmocarcinoma | medical, cancer of the eye |
| ophthalmocele | medical, protrusion of the eyeball |
| ophthalmocopia | medical, fatigue of the eyes |
| ophthalmodiagnosis | medical, diagnosis from the eye |
| ophthalmodiastimeter | instrument for interpupillary distance |
| ophthalmoleucoscope | medical, eye colour-vision instrument |
| ophthalmolith | medical, a stone in the tear duct |
| ophthalmomalacia | medical, softening of the eyeball |
| ophthalmometrical | medical, of the ophthalmometer |
| ophthalmomyositis | medical, inflamed eye muscles |
| ophthalmomyotomy | medical, cutting of an eye muscle |
| ophthalmoneuritis | medical, inflammation of the optic nerve |
| ophthalmophlebotomy | medical, bleeding from a vein of the eye |
| ophthalmophore | zoology, an eye-stalk |
| ophthalmophorous | zoology, bearing eye-stalks |
| ophthalmophthisis | medical, wasting of the eyeball |
| ophthalmoplasty | medical, plastic surgery of the eye |
| ophthalmopod | zoology, an eye-stalk |
| ophthalmoptosis | medical, protrusion of the eyeball |
| ophthalmorrhagia | medical, bleeding from the eye |
| ophthalmorrhea | medical, discharge from the eye |
| ophthalmorrhexis | medical, rupture of the eyeball |
| ophthalmostasis | medical, fixation of the eye in surgery |
| ophthalmostatometer | instrument for eyeball position |
| ophthalmothermometer | instrument for eye temperature |
| ophthalmotonometer | instrument for pressure in the eyeball |
| ophthalmotropometer | instrument measuring eye movement |
| opianic | chemistry, of opianic acid |
| opilionine | zoology, of the harvestmen |
| opiophagy | medical, the eating of opium |
| opisthocome | ornithology, a hoatzin |
| opisthocomous | zoology, with backward-growing hair |
| opisthodetic | zoology, ligament behind the beak |
| opisthoglossal | zoology, of the Opisthoglossa |
| opisthoglossate | zoology, tongue attached in front |
| opisthoglyphic | zoology, rear-fanged |
| opisthognathism | anatomy, condition of receding jaws |
| opisthogyrous | zoology, umbo curved backward |
| opisthophagic | zoology, feeding from behind |
The other lists filed alongside this one.
