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 |
|---|---|
| reaginically | immunology, by way of reagin |
| receptaculite | paleontology, a receptaculitid fossil |
| receptaculitoid | paleontology, resembling Receptaculites |
| receptually | psychology, in terms of recepts |
| recipiomotor | physiology, receiving and passing on motor impulses |
| reclivate | entomology, S-curved, as a line on a wing |
| rectangulometer | an instrument for measuring right angles |
| rectilineation | geometry, formation in straight lines |
| rectirostral | zoology, straight-beaked |
| rectischiac | anatomy, of the rectum and the ischium |
| rectitic | medical, of rectitis, inflammation of the rectum |
| rectococcygeus | anatomy, the muscle from rectum to coccyx |
| rectocystotomy | surgery, cutting into the bladder through the rectum |
| rectoplasty | surgery, plastic repair of the rectum |
| rectorrhaphy | surgery, suture of the rectum |
| rectostenosis | medical, narrowing of the rectum |
| rectostomy | surgery, making an opening into the rectum |
| rectotome | surgery, an instrument for cutting the rectum |
| recurvirostral | zoology, having an upcurved bill |
| reduzate | geology, sediment laid down under reducing conditions |
| reincrudate | alchemy, to reduce back to a crude state |
| renculus | anatomy, a lobule of the kidney (L. ren) |
| reniportal | anatomy, of the renal portal vein |
| renniogen | biochemistry, the precursor of rennin |
| repandodenticulate | botany, wavy-margined and finely toothed |
| repandolobate | botany, wavy-margined and lobed |
| rephosphorization | metallurgy, phosphorizing steel again |
| replicatile | entomology, folded back on itself |
| repullulescent | botany, sprouting or budding again |
| resequent | geology, a stream following the original dip |
| resilial | conchology, of the resilium of a bivalve hinge |
| resinifluous | botany, flowing with resin |
| resinoelectric | physics, of resinous (negative) electricity |
| resinoextractive | chemistry, extracting resin |
| resinol | chemistry, a resin alcohol |
| resinolic | chemistry, of resinol |
| resinophore | chemistry, a resin-forming group |
| resinovitreous | physics, both resinous and vitreous |
| resistate | geochemistry, sediment of resistant minerals |
| resorcinal | chemistry, of resorcin |
| resorcinum | pharmacy Latin, resorcin |
| restibrachium | anatomy, the restiform body of the brain |
| retiarian | zoology, of the net-spinning spiders |
| reticulatocoalescent | botany, netted and running together |
| reticulatogranulate | netted and granulate in surface sculpture |
| reticulatoramose | netted and branching |
| reticulatovenose | botany, net-veined |
| reticuloramose | netted and branching |
| reticulovenose | botany, net-veined |
| retinochorioid | anatomy, of the retina and choroid |
| retinochorioidal | anatomy, of the retina and choroid |
| retinochorioiditis | medical, inflammation of retina and choroid |
| retinopapilitis | medical, inflammation of retina and optic papilla |
| retinophore | zoology, retina-bearing cell of an arthropod eye |
| retinule | zoology, the retinula of an ommatidium |
| retrobronchial | anatomy, behind the bronchi |
| retrobuccal | anatomy, behind the mouth cavity |
| retroclavicular | anatomy, behind the clavicle |
| retrocouple | engineering, to couple back, to feed back |
| retrocoupler | engineering, a feedback coupler |
| retrodeviation | medical, a backward displacement |
| retrodirective | physics, reflecting back along the incident path |
| retrodural | anatomy, behind the dura mater |
| retrofrontal | anatomy, behind the frontal region |
| retroiridian | anatomy, behind the iris |
| retrojugular | anatomy, behind the jugular vein |
| retromorphosed | biology, having undergone retromorphosis |
| retromorphosis | biology, degenerative change backward |
| retropharyngitis | medical, inflammation behind the pharynx |
| retropulmonary | anatomy, behind the lungs |
| retroserrulate | botany, with fine teeth pointing backward |
| retrosplenic | anatomy, behind the splenium |
| retrostalsis | physiology, backward peristalsis |
| retrostaltic | physiology, contracting backward |
| retrotemporal | anatomy, behind the temporal region |
| retrothyroid | anatomy, behind the thyroid |
| rhabarbaric | chemistry, rhabarbaric acid of rhubarb |
| rhabdium | biology, a small rod-shaped body |
| rhabdocoelan | zoology, of the flatworm order Rhabdocoela |
| rhabdocoelidan | zoology, a member of the Rhabdocoelida |
| rhabdophanite | mineralogy, the mineral rhabdophane |
| rhabdopod | zoology, a rod-shaped appendage |
| rhabdosophy | Greek rhabdos + -sophy, lore of the divining rod |
| rhaebosis | medical, bowing or crookedness of a limb |
| rhagadiform | medical, fissured like rhagades |
| rhagiocrin | histology, of granule-secreting cells |
| rhagite | mineralogy, a bismuth arsenate mineral |
| rhagonate | zoology, of the rhagon stage of a sponge |
| rhagonoid | zoology, rhagon-like in sponge structure |
| rhagose | medical, chapped or fissured |
| rhamn | botany, a buckthorn (Rhamnus) |
| rhamnal | botany, of the Rhamnales, the buckthorn order |
| rhamninase | biochemistry, enzyme splitting rhamninose |
| rhamninose | chemistry, a sugar from rhamnin |
| rhamnite | chemistry, an alcohol from rhamnose |
| rhamnohexite | chemistry, a hexitol from rhamnose |
| rhamnohexitol | chemistry, the hexitol of rhamnose |
| rhamnonic | chemistry, rhamnonic acid from rhamnose |
| rhapontin | chemistry, a glucoside of rhubarb root |
| rhe | physics, unit of fluidity, the reciprocal poise |
The other lists filed alongside this one.
