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 |
|---|---|
| octaeterid | chronology, a cycle of eight years |
| octahedroid | geometry, four-dimensional octahedron |
| octahydrated | chemistry, with eight molecules of water |
| octanaphthene | chemistry, an eight-carbon naphthene |
| octandrian | botany, having eight stamens |
| octandrious | botany, having eight stamens |
| octaploidic | genetics, having eight chromosome sets |
| octapodic | prosody, of eight metrical feet |
| octasemic | prosody, of eight time-units |
| octastichon | prosody, an eight-line stanza |
| octastrophic | prosody, having eight strophes |
| octine | chemistry, an eight-carbon alkyne |
| octocorallan | zoology, a member of the Octocorallia |
| octocotyloid | zoology, resembling Octocotyle, a fluke |
| octodactyl | zoology, having eight digits |
| octodactyle | zoology, having eight digits |
| octodianome | zoology, an eight-branched sponge spicule |
| octogynian | botany, having eight pistils |
| octogynious | botany, having eight pistils |
| octomerous | biology, having parts in eights |
| octometer | prosody, a verse of eight feet |
| octonare | prosody, a verse of eight feet, octonarius |
| octonematous | biology, having eight filaments |
| octophthalmous | zoology, having eight eyes |
| octophyllous | botany, having eight leaves |
| octoploidic | genetics, having eight chromosome sets |
| octoreme | antiquity, galley with eight banks of oars |
| octosepalous | botany, having eight sepals |
| oculinoid | zoology, resembling the coral Oculina |
| oculofrontal | anatomy, of the eye and forehead |
| ocydromine | ornithology, of the weka genus Ocydromus |
| ocypodoid | zoology, resembling a ghost crab |
| odacoid | ichthyology, resembling the Odacidae |
| oddside | founding, a spare half-mold |
| odinitic | petrology, of odinite |
| odiometer | instrument for measuring odour strength |
| odontatrophia | medical, atrophy of the teeth |
| odontatrophy | dentistry, wasting of the teeth |
| odontexesis | dentistry, scaling of the teeth |
| odontitis | medical, inflammation of a tooth |
| odontocele | dentistry, a cyst of the tooth pulp |
| odontocetous | zoology, of the toothed whales |
| odontochirurgic | dentistry, of dental surgery |
| odontoclasis | dentistry, fracture of a tooth |
| odontodynia | medical, toothache |
| odontogen | dentistry, the tooth-forming substance |
| odontoglossal | zoology, having a toothed tongue |
| odontoglossate | zoology, with a toothed tongue |
| odontognathic | paleontology, of the toothed birds |
| odontohyperesthesia | dentistry, extreme sensitiveness of the teeth |
| odontolcate | paleontology, having teeth set in grooves |
| odontolcous | paleontology, with teeth in a groove |
| odontoloxia | dentistry, irregularity of the teeth |
| odontomous | pathology, of or like an odontoma |
| odontonosology | dentistry, study of diseases of the teeth |
| odontophoran | zoology, a mollusk having an odontophore |
| odontophorine | ornithology, of the American quails |
| odontoplerosis | dentistry, the filling of teeth |
| odontorhynchous | zoology, having a toothed beak |
| odontornithic | paleontology, of the toothed birds |
| odontorthosis | dentistry, straightening of the teeth |
| odontoschism | dentistry, splitting or fissure of a tooth |
| odontosis | dentistry, the development of teeth |
| odontostomatous | zoology, having toothed jaws |
| odontostomous | zoology, having a toothed mouth |
| odontotherapia | dentistry, treatment of the teeth |
| odontotherapy | dentistry, treatment of the teeth |
| odontotripsis | dentistry, wearing away of the teeth |
| odontotrypy | dentistry, perforation of a tooth to drain it |
| odophone | Piesse's scale matching odours to musical notes |
| odoriphor | chemistry, an odour-bearing atom group |
| odoriphore | chemistry, group conferring odour |
| odylization | charging with odyl, Reichenbach's od force |
| odylize | to charge with odylic force |
| oecodomic | architecture, pertaining to building |
| oecodomical | architecture, relating to building |
| oecoid | cytology, framework of a red blood cell |
| oecoparasite | biology, parasite tied to a host's habitat |
| oecoparasitism | biology, habitat-bound parasitism |
| oedicnemine | ornithology, of the thick-knees |
| oedogoniaceous | botany, of the algal family Oedogoniaceae |
| oenanthaldehyde | chemistry, oenanthal, heptaldehyde |
| oenanthol | chemistry, heptaldehyde from wine oil |
| oenanthole | chemistry, var. of oenanthol |
| oenanthyl | chemistry, the heptanoyl radical |
| oenanthylate | chemistry, salt of oenanthylic acid |
| oenanthylic | chemistry, of heptanoic acid |
| oenolic | chemistry, oenolic acid, from wine |
| oenolin | chemistry, red colouring matter of wine |
| oenophobist | one who has a horror of wine |
| oesophagism | medical, spasm of the esophagus |
| oestrian | entomology, of the botflies |
| oestriasis | medical, infestation with botfly larvae |
| offlap | geology, seaward-stepping strata |
| ogenesis | biology, formation of the egg, oogenesis |
| ogenetic | biology, of oogenesis |
| ogonium | biology, oogonium, female organ in algae |
| oikomania | medical, mental disorder arising in the home |
| oikoplast | zoology, cell secreting an appendicularian's house |
| okoniosis | medical, disease from inhaled dust |
The other lists filed alongside this one.
