| ALGOLOGISTS | • algologists n. Plural of algologist. • ALGOLOGIST n. one learned about algae; a student of algology. |
| BALLOONISTS | • balloonists n. Plural of balloonist. • BALLOONIST n. a person who operates or rides in a balloon. |
| BLASTOCOELS | • blastocoels n. Plural of blastocoel. • BLASTOCOEL n. the cavity inside a blastula, also BLASTOCOELE. |
| CLOSESTOOLS | • closestools n. Plural of closestool. • close-stools n. Plural of close-stool. • close␣stools n. Plural of close stool. |
| COLESTIPOLS | • COLESTIPOL n. a drug that reduces the level of cholesterol in the blood. |
| COLLOQUISTS | • colloquists n. Plural of colloquist. • COLLOQUIST n. a speaker in a colloquy or dialogue. |
| FOLKLORISTS | • folklorists n. Plural of folklorist. • FOLKLORIST n. a student of folklore. |
| IDOLOCLASTS | • idoloclasts n. Plural of idoloclast. • IDOLOCLAST n. a breaker of idols; an iconoclast. |
| OSCILLATORS | • oscillators n. Plural of oscillator. • OSCILLATOR n. one that oscillates. |
| OSTEOCOLLAS | • OSTEOCOLLA n. a kind of glue obtained from bones. |
| POSTILLIONS | • postillions n. Plural of postillion (alternative spelling of postilions). • POSTILLION n. (historical) a person who rides near horse of those drawing coach etc. and acts as guide to the whole team, also POSTILION. |
| SOLILOQUIST | • soliloquist n. A person who soliloquizes. • SOLILOQUIST n. one who soliloquizes. |
| TOOTHSHELLS | • toothshells n. Plural of toothshell. • tooth␣shells n. Plural of tooth shell. • TOOTHSHELL n. any species of Dentalium and allied genera having a tooth-shaped shell. |
| TYPHLOSOLES | • typhlosoles n. Plural of typhlosole. • TYPHLOSOLE n. a fold of the wall which projects into the cavity of the intestine in bivalve mollusks, certain annelids, starfishes, and some other animals. |