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 |
|---|---|
| ornithomyzous | zoology, sucking the blood of birds |
| ornithophilite | botany, a bird-pollinated plant |
| ornithorhynchous | zoology, duck-billed, like the platypus |
| ornithosaur | paleontology, a pterosaur |
| ornithosaurian | paleontology, of or a pterosaur |
| ornithotomical | of the anatomy and dissection of birds |
| ornithotrophy | the rearing of birds, aviculture |
| ornithuric | chemistry, ornithuric acid, from birds' urine |
| ornithurous | zoology, having a fan-shaped bird tail |
| ornoite | petrology, a hornblende diorite rock |
| orobancheous | botany, of the broomrape family |
| orobathymetric | geography, of heights and depths measured |
| orocentral | oro- (mouth) + central |
| orocratic | geology, of a period of mountain-building |
| orodiagnosis | medical, diagnosis from the mouth |
| orogenesy | geology, the formation of mountains |
| orohydrographic | geography, of mountains and waters |
| orohydrographical | geography, of orohydrography |
| orohydrography | geography, description of mountains and rivers |
| orometric | geography, of the measurement of mountains |
| orometry | geography, measurement of mountain heights |
| orrhoid | medical, serum-like, serous |
| orrhology | medical, the study of blood serum |
| orrhotherapy | medical, treatment by blood serum |
| orseilline | chemistry, a dye derived from orseille |
| orsellic | chemistry, orsellic acid, from orchil |
| orsellinic | chemistry, orsellinic acid, from lichens |
| ortalidian | entomology, an ortalid fly |
| orthal | zoology, of straight up-and-down jaw movement |
| orthantimonic | chemistry, orthantimonic acid |
| orthitic | mineralogy, of orthite (allanite) |
| orthoaxis | crystallography, the orthodiagonal axis |
| orthobiosis | medical, right living (Metchnikoff) |
| orthobrachycephalic | craniometry, short-headed with straight profile |
| orthocarbonic | chemistry, orthocarbonic acid |
| orthocarpous | botany, having straight fruit |
| orthoceran | paleontology, of the straight-shelled Orthoceras |
| orthoceratitic | paleontology, of orthoceratites |
| orthochlorite | mineralogy, a group of the chlorite minerals |
| orthoclasite | petrology, rock composed chiefly of orthoclase |
| orthocoumaric | chemistry, ortho-coumaric acid |
| orthocresol | chemistry, o-cresol |
| orthocym | chemistry, ortho-cymene |
| orthocymene | chemistry, the ortho isomer of cymene |
| orthodiaene | zoology, a sponge spicule with straight clads |
| orthodiazin | chemistry, ortho-diazine (-in form) |
| orthodiazine | chemistry, ortho-diazine, pyridazine |
| orthodolichocephalic | craniometry, long-headed with straight profile |
| orthodomatic | crystallography, of the orthodome |
| orthoformic | chemistry, orthoformic acid and its esters |
| orthogranite | petrology, granite of igneous origin |
| orthologer | one skilled in orthology, correct diction |
| orthologian | one versed in orthology |
| orthometopic | craniometry, having a straight forehead |
| orthonitroaniline | chemistry, o-nitroaniline |
| orthopath | medical, a practitioner of orthopathy |
| orthopathic | medical, of orthopathy |
| orthopathically | medical, in an orthopathic manner |
| orthopinacoidal | crystallography, of the orthopinacoid |
| orthoplastic | biology, developing in a straight line |
| orthoplumbate | chemistry, a salt of orthoplumbic acid |
| orthopraxia | medical, correction of deformity, orthopraxy |
| orthoprism | crystallography, prism on the orthodiagonal |
| orthopsychiatrical | medical, of orthopsychiatry |
| orthopteral | entomology, of the Orthoptera |
| orthopyramid | crystallography, pyramid on the orthodiagonal |
| orthorrhaphy | zoology, the straight-seamed condition in flies |
| orthosemidin | chemistry, ortho-semidine (-in form) |
| orthosemidine | chemistry, ortho-semidine |
| orthosite | petrology, rock made chiefly of orthoclase |
| orthosymmetrically | crystallography, in monoclinic symmetry |
| orthosymmetry | crystallography, monoclinic symmetry |
| orthotectic | petrology, of direct magmatic crystallization |
| orthotolidin | chemistry, o-tolidine (-in form) |
| orthotoluic | chemistry, ortho-toluic acid |
| orthotoluidin | chemistry, o-toluidine (-in form) |
| orthotoluidine | chemistry, o-toluidine |
| orthotypous | mineralogy, cleaving at right angles |
| orthovanadic | chemistry, orthovanadic acid |
| orthoveratraldehyde | chemistry, ortho-veratraldehyde |
| orthoveratric | chemistry, orthoveratric acid |
| orthoxazin | chemistry, ortho-oxazine (-in form) |
| orthoxazine | chemistry, ortho-oxazine |
| ortygine | ornithology, of the American quails |
| oryssid | entomology, a parasitic wood wasp |
| oryzanin | biochemistry, oryzanin, thiamine from rice |
| oryzanine | biochemistry, vitamin B1 from rice bran |
| osamin | chemistry, osamine (-in form) |
| osamine | chemistry, an amino sugar from an osone |
| oscheitis | medical, inflammation of the scrotum |
| oscheocarcinoma | medical, carcinoma of the scrotum |
| oscheolith | medical, a calculus in the scrotum |
| oscheoma | medical, a tumor of the scrotum |
| oscheoncus | medical, swelling of the scrotum |
| oscillariaceous | botany, of the Oscillariaceae |
| oscin | chemistry, oscine, a base from scopolamine |
| oscinian | entomology, a frit fly of genus Oscinis |
| osculiferous | zoology, bearing oscula, as a sponge |
| osmatism | zoology, possession of a sense of smell |
| osmazomatic | chemistry, of osmazome, the meat extract |
The other lists filed alongside this one.
