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 |
|---|---|
| rheadine | chemistry, an alkaloid of the corn poppy |
| rhebosis | medical, bowing of a limb; var. of rhaebosis |
| rhegmatype | printing, a relief plate made by rhegmatypy |
| rhegmatypy | printing, engraving by breaking away the ground |
| rheinic | chemistry, of rhein, the rhubarb compound |
| rheophoric | physics, of a rheophore, an electrode lead |
| rheoplankton | biology, plankton of running water |
| rheostatics | physics, the statics of flowing currents |
| rheotron | physics, the betatron, an electron accelerator |
| rhigosis | medical, the sensation of cold |
| rhigotic | medical, of rhigosis, cold sensation |
| rhincospasm | medical, spasm of the nostril |
| rhinenchysis | medical, injection of fluid into the nose |
| rhinobyon | medical, a plug or tampon for the nose |
| rhinocaul | anatomy, the stalk of the olfactory lobe |
| rhinocele | anatomy, cavity of the olfactory lobe |
| rhinocelian | anatomy, of the rhinocele |
| rhinochiloplasty | surgery, plastic repair of nose and lip |
| rhinocoele | anatomy, olfactory ventricle; var. rhinocele |
| rhinocoelian | anatomy, of the rhinocoele |
| rhinogenous | medical, arising in the nose |
| rhinolite | medical, a nasal calculus, a rhinolith |
| rhinolithic | medical, of a rhinolith |
| rhinopolypus | medical, a polypus of the nose |
| rhipidoglossal | zoology, of the fan-tongued Rhipidoglossa |
| rhipidoglossate | zoology, having a fan-shaped radula |
| rhipipteran | entomology, a member of the Rhipiptera |
| rhipipterous | entomology, of the Rhipiptera |
| rhizinous | botany, bearing rhizines, the rootlets of lichens |
| rhizocarp | botany, a plant with a perennial root |
| rhizocarpian | botany, of the rhizocarps |
| rhizocaulus | zoology, the rootlike stem of a hydroid |
| rhizocephalid | zoology, a parasitic barnacle of Rhizocephala |
| rhizoctoniose | plant pathology, a Rhizoctonia disease |
| rhizoneure | anatomy, a nerve-root cell |
| rhizopodan | zoology, of the Rhizopoda, amoeboid protozoa |
| rhizostomous | zoology, of the Rhizostomae jellyfishes |
| rhizote | botany, rooted, furnished with roots |
| rhizotic | botany, relating to roots |
| rhodaline | chemistry, a rhodan (thiocyanate) compound |
| rhodanic | chemistry, rhodanic (thiocyanic) acid |
| rhodeose | chemistry, a sugar isomeric with rhamnose |
| rhodizonic | chemistry, rhodizonic acid |
| rhodophyceous | botany, of the Rhodophyceae, the red algae |
| rhodoplast | botany, the red plastid of red algae |
| rhodorhiza | botany, Greek "rose-root", source of rhodium wood |
| rhodospermin | chemistry, a proteid of red algae |
| rhodospermous | botany, having red spores |
| rhodymeniaceous | botany, of the Rhodymeniaceae |
| rhombogenic | zoology, producing rhombogens |
| rhombogenous | zoology, producing rhombogens |
| rhomboquadratic | crystallography, rhombic-quadratic, tetragonal |
| rhomborectangular | crystallography, rhombic and rectangular |
| rhombovate | botany, rhomboid-ovate in leaf outline |
| rhoncal | medical, of a rhonchus, a rattling breath sound |
| rhotacist | linguistics, one who burrs or substitutes r |
| rhotacistic | linguistics, of rhotacism |
| rhynchocephalic | zoology, of the Rhynchocephalia |
| rhynchocephalous | zoology, beak-headed, of the tuatara group |
| rhynchocoele | zoology, the proboscis cavity of a nemertean |
| rhynchocoelic | zoology, of the rhynchocoele |
| rhynchocoelous | zoology, having a rhynchocoele |
| rhynchodont | zoology, having a toothed beak |
| rhynchonelloid | paleontology, like the brachiopod Rhynchonella |
| rhynchophore | zoology, a snout-bearing insect, a weevil |
| rhynchotal | entomology, of the Rhynchota, the bugs |
| rhynchote | entomology, a member of the Rhynchota |
| rhynconellid | paleontology, brachiopod of Rhynconella |
| rhyobasalt | geology, a rock between rhyolite and basalt |
| rhyotaxitic | geology, of flow-banded taxitic texture |
| rhyptic | medical, cleansing, detergent |
| rhyptical | medical, cleansing, detergent |
| rhytidosis | medical, wrinkling, as of the cornea |
| ribonic | chemistry, ribonic acid from ribose |
| ricinelaidic | chemistry, ricinelaidic acid |
| ricinelaidinic | chemistry, of ricinelaidin |
| ricininic | chemistry, an acid from ricinine of the castor bean |
| ricolettaite | petrology, a gabbroid igneous rock |
| rifleite | chemistry, a smokeless gun powder |
| rimal | anatomy, of a rima or cleft |
| ripal | of a river bank (Latin ripa) |
| rivulation | zoology, marking in wavy streaks |
| rizzonite | petrology, an igneous rock named for its locality |
| robinoside | chemistry, a glucoside from Robinia |
| roccellic | chemistry, roccellic acid of the orchil lichen |
| roentgenopaque | medical, opaque to X-rays |
| rogersite | mineralogy, a rare-earth mineral named for Rogers |
| romanium | metallurgy, an aluminium alloy |
| romeine | mineralogy, romeine, a calcium antimonate |
| roncet | plant pathology, a disease of the grapevine |
| ronnel | chemistry, an organophosphate insecticide |
| rosellate | botany, arranged in a small rosette |
| roseoliform | medical, resembling roseola |
| rosinate | chemistry, a salt of rosinic acid |
| rosinol | chemistry, an oil distilled from rosin |
| rosolic | chemistry, of rosolic acid (aurin) |
| rosorial | zoology, gnawing, of the rodents |
| rostellarian | zoology, of the gastropod genus Rostellaria |
| rostroantennary | zoology, of the rostrum and antennae |
| rostrobranchial | zoology, of the rostrum and gills |
The other lists filed alongside this one.
