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 |
|---|---|
| ichthyobatrachian | zoology, fish-amphibian intermediate |
| ichthyocephalous | zoology, fish-headed |
| ichthyocoprolite | paleontology, fossil fish dung |
| ichthyodian | zoology, of the Ichthyodea |
| ichthyodont | paleontology, a fossil fish tooth |
| ichthyodorylite | paleontology, fossil fish fin-spine |
| ichthyographia | New Latin, a treatise on fishes |
| ichthyomania | a mania for fishes |
| ichthyopaleontology | the study of fossil fishes |
| ichthyophagize | to feed on fish |
| ichthyopolism | the fishmonger's trade |
| ichthyopsid | zoology, vertebrate of the Ichthyopsida |
| ichthyopsidan | zoology, of the Ichthyopsida |
| ichthyornithic | paleontology, of Ichthyornis |
| ichthyornithoid | paleontology, resembling Ichthyornis |
| ichthyosauroid | paleontology, resembling an ichthyosaur |
| iconolagny | sexology, arousal from pictures |
| iconomaticism | use of picture-signs for sounds |
| icosasemic | prosody, of twenty morae |
| icositedra | geometry, 24-faced solids (icositetrahedra) |
| icosteine | ichthyology, of the ragfish genus Icosteus |
| icotype | taxonomy, specimen named by an expert |
| icterous | medical, affected with jaundice |
| ictuate | prosody, to mark with an ictus |
| idaein | chemistry, red pigment of the cowberry |
| ideogenical | philosophy, of ideogeny, origin of ideas |
| ideomania | medical, obsession with a single idea |
| ideophonous | expressing ideas by sound |
| ideoplastia | psychology, shaping by suggestion |
| ideoplasty | psychology, molding of the body by an idea |
| idiodynamic | psychology, of one's own inner force |
| idiogenous | medical, arising of itself |
| idiohypnotism | self-induced hypnosis |
| idiologism | psychiatry, idiosyncratic use of words |
| idiolysin | immunology, lysin proper to one individual |
| idiophanism | optics, being idiophanous |
| idioplasmatic | biology, of the idioplasm |
| idioreflex | physiology, reflex arising in the organ |
| idioretinal | of the retina's own intrinsic light |
| idiorrhythmy | monasticism, self-regulated rule |
| idiospasm | medical, a localized spasm |
| idiospastic | medical, of a local spasm |
| idiostatic | electricity, electrometer connection |
| idiothalamous | lichenology, thallus-independent apothecia |
| idiothermous | zoology, warm-blooded |
| idiothermy | self-generated body heat |
| idiotropian | psychology, the introspective type |
| idiozome | cytology, sphere about the centrosome |
| idite | chemistry, alcohol derived from idose |
| idolothytic | theology, offered to idols |
| idosaccharic | chemistry, acid derived from idose |
| idryl | chemistry, old name for fluoranthene |
| ileocolostomy | surgery, ileum-to-colon anastomosis |
| ileocolotomy | surgery, incision of ileum and colon |
| ileosigmoidostomy | surgery, ileum-to-sigmoid anastomosis |
| ilicaceous | botany, of the holly family |
| ilicic | chemistry, acid from holly (Ilex) |
| iliocaudalis | anatomy, the iliocaudal muscle |
| iliococcygian | anatomy, of ilium and coccyx |
| iliocostales | anatomy, the iliocostal muscles (pl.) |
| ilioperoneal | anatomy, of ilium and fibula |
| iliopsoatic | anatomy, of the iliopsoas |
| iliosciatic | anatomy, of ilium and sciatic notch |
| illutate | medical, to treat with mud |
| ilysioid | herpetology, like the pipe-snake Ilysia |
| iminohydrin | chemistry, imino derivative of a hydrin |
| iminourea | chemistry, guanidine |
| imonium | chemistry, the immonium (iminium) ion |
| impatientaceous | botany, of the balsam family |
| impedor | electricity, an impedance element |
| imperscriptible | law, resting on no written authority |
| impubic | anatomy, not yet pubescent |
| inachoid | zoology, like the spider crab Inachus |
| inantherate | botany, without anthers |
| inaxon | neurology, nerve cell with short axon |
| incaliculate | botany, lacking a calicle |
| incisural | anatomy, of an incisure or notch |
| inclavate | anatomy, wedged or nailed in |
| incretionary | physiology, of internal secretion |
| incretory | physiology, endocrine, of incretion |
| indaconitin | chemistry, alkaloid of Indian aconite |
| indazin | chemistry, indazine (terminal -e dropped) |
| indazine | chemistry, a nitrogenous ring compound |
| indianite | mineralogy, variety of anorthite from India |
| indifulvin | chemistry, tawny derivative of indigo |
| indigometer | chemistry, gauge of indigo strength |
| indigotindisulphonic | chemistry, indigotin-disulphonic acid |
| indiguria | medical, indigo (indican) in the urine |
| indirubine | chemistry, indirubin, red isomer of indigo |
| indologenous | bacteriology, indol-producing |
| indoloid | chemistry, resembling indole |
| indone | chemistry, ketone derived from indene |
| indophenin | chemistry, blue dye from thiophene and isatin |
| indoxylsulphuric | chemistry, indoxylsulphuric acid |
| inductothermy | medical, heating tissue by induction |
| indyl | chemistry, the indyl (indolyl) radical |
| indylic | chemistry, of indyl, as indylic acid |
| ineducabilia | psychology, class of the uneducable |
| ineducabilian | psychology, one of the uneducable class |
| inequicostate | conchology, having unequal ribs |
The other lists filed alongside this one.
