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 |
|---|---|
| penthiophen | chemistry, a thiophene homologue |
| penthiophene | chemistry, methyl-thiophene compound |
| pentit | chemistry, a pentitol, five-carbon polyol |
| pentoic | chemistry, pentanoic (valeric) acid |
| pentosid | chemistry, a pentoside |
| pentylene | chemistry, amylene, C5H10 |
| pentylidene | chemistry, the pentylidene radical |
| peponid | botany, a gourd-type fruit, a pepo |
| pepsinate | chemistry, to treat with pepsin |
| peptidically | biochemistry, in the manner of a peptide |
| peptogaster | zoology, the digestive sac |
| peptogeny | physiology, production of peptones |
| peptohydrochloric | chemistry, of peptone and hydrochloric acid |
| peptonaemia | medical, peptones in the blood |
| peptonate | chemistry, a compound of peptone |
| peptonemia | medical, peptones in the blood |
| peptonizer | agent that converts protein to peptone |
| peracidite | petrology, rock extremely rich in silica |
| perameline | zoology, of the bandicoots (Perameles) |
| perborax | chemistry, perborate of soda |
| percarbonic | chemistry, of percarbonic acid |
| perchlorethane | chemistry, hexachloroethane |
| perchlorethylene | chemistry, tetrachloroethylene |
| perchloroethane | chemistry, fully chlorinated ethane |
| perchromate | chemistry, salt of perchromic acid |
| perchromic | chemistry, of perchromic acid |
| percoidean | ichthyology, of the perch-like fishes |
| percomorphous | ichthyology, of the Percomorphi |
| peregrinoid | ornithology, of the peregrine falcon group |
| pereirine | chemistry, alkaloid of pereiro bark |
| perfilograph | engineering, surface-profile recorder |
| perfoliation | botany, state of being perfoliate |
| perhalide | chemistry, halide with excess halogen |
| perhalogen | chemistry, fully halogenated compound |
| perhydroanthracene | chemistry, fully hydrogenated anthracene |
| perhydrogenate | chemistry, to hydrogenate completely |
| perhydrogenation | chemistry, complete hydrogenation |
| perhydrogenize | chemistry, to hydrogenate fully |
| periamygdalitis | medical, inflammation around the tonsil |
| periangiocholitis | medical, inflammation around the bile ducts |
| periangioma | medical, tumor around a vessel |
| periangitis | medical, inflammation around a vessel |
| periappendicitis | medical, inflammation around the appendix |
| periareum | anatomy, the region about the areola |
| periarthric | anatomy, about a joint |
| periaster | astronomy, orbital point nearest a star |
| periastrum | astronomy, Latin form of periaster |
| periaxillary | anatomy, around the armpit |
| periblastula | embryology, a blastula with central yolk |
| pericaecal | anatomy, around the caecum |
| pericaecitis | medical, inflammation around the caecum |
| pericardicentesis | medical, puncture of the pericardium |
| pericardiolysis | medical, freeing of pericardial adhesions |
| pericardiomediastinitis | medical, inflamed pericardium and mediastinum |
| pericardiorrhaphy | medical, suture of the pericardium |
| pericardiosymphysis | medical, adhesion of pericardium to heart |
| pericarditic | medical, relating to pericarditis |
| pericardotomy | medical, incision of the pericardium |
| pericarpoidal | botany, resembling a pericarp |
| pericecal | anatomy, around the cecum |
| pericecitis | medical, inflammation around the cecum |
| pericementitis | dentistry, inflamed periodontal membrane |
| pericementoclasia | dentistry, destruction of the pericementum |
| pericementum | dentistry, the periodontal ligament |
| pericephalic | anatomy, around the head |
| perichorioidal | anatomy, around the choroid coat |
| perichoroidal | anatomy, surrounding the choroid |
| perichylous | botany, with water cells around the chlorenchyma |
| periclasia | dentistry, destruction of periodontal tissue |
| pericolpitis | medical, inflammation around the vagina |
| periconchal | anatomy, around the concha |
| periconchitis | medical, inflammation around the orbit |
| pericowperitis | medical, inflammation around Cowper's gland |
| pericoxitis | medical, inflammation around the hip joint |
| pericranitis | medical, inflammation of the pericranium |
| pericristate | zoology, crested about the margin |
| pericycloid | geometry, a roulette traced outside a circle |
| pericyclone | meteorology, the region about a cyclone |
| pericyclonic | meteorology, about a cyclone |
| pericystium | anatomy, tissue investing a cyst |
| peridentium | dentistry, the periodontal membrane |
| peridentoclasia | dentistry, destruction of periodontal tissue |
| peridesmitis | medical, inflammation of the peridesmium |
| peridiastolic | medical, occurring about diastole |
| perididymitis | medical, inflammation of the tunica vaginalis |
| peridiiform | mycology, shaped like a peridium |
| peridiniaceous | botany, of the Peridiniaceae |
| peridinial | botany, of the genus Peridinium |
| peridinian | zoology, a peridinian dinoflagellate |
| peridinid | zoology, a dinoflagellate of the Peridinidae |
| perienteritis | medical, inflamed peritoneal coat of the bowel |
| periesophagitis | medical, inflammation around the esophagus |
| perifoliary | botany, surrounding the leaves |
| perigangliitis | medical, inflammation around a ganglion |
| perigastrula | embryology, a gastrula form |
| perigastrular | embryology, of a perigastrula |
| periglial | neurology, around the neuroglia |
| perigonal | botany, of the perigone or perianth |
| perihelian | astronomy, relating to the perihelion |
| perihermenial | logic, of Aristotle's Peri Hermeneias |
The other lists filed alongside this one.
