| ARCHGENETHLIACS | • ARCHGENETHLIAC n. (Browning) in derogatory sense, the greatest of genethliacs or astrologers. |
| BRACHYCEPHALIES | • brachycephalies n. Plural of brachycephaly. • BRACHYCEPHALY n. the state of being brachycephalic, short-headed. |
| CHANNELOPATHIES | • channelopathies n. Plural of channelopathy. |
| DICHLOROETHANES | • dichloroethanes n. Plural of dichloroethane. • DICHLOROETHANE n. a colorless toxic liquid compound that is used chiefly as a solvent. |
| HELIOSCIOPHYTES | • HELIOSCIOPHYTE n. a plant that thrives in sun better than shade. |
| HELMINTHOLOGIES | • HELMINTHOLOGY n. the study of parasitic worms. |
| HETEROTHALLISMS | • heterothallisms n. Plural of heterothallism. • HETEROTHALLISM n. the state of being heterothallic, also HETEROTHALLY. |
| HOBBLEDEHOYISMS | • HOBBLEDEHOYISM n. the state of being a hobbledehoy, also HOBBLEDEHOYDOM, HOBBLEDEHOYHOOD. |
| HOUSEHOLDERSHIP | • householdership n. The position or role of a householder. • HOUSEHOLDERSHIP n. the office of householder. |
| METHYLTHIONINES | • METHYLTHIONINE n. as in methylthionine chloride, a dark green dye used as a stain, antiseptic etc. |
| METHYLXANTHINES | • methylxanthines n. Plural of methylxanthine. • METHYLXANTHINE n. a methylated xanthine derivative, such as caffeine, theobromine, or theophylline. |
| PHENETHYLAMINES | • phenethylamines n. Plural of phenethylamine. |
| PHENYLTHIOUREAS | • phenylthioureas n. Plural of phenylthiourea. • PHENYLTHIOUREA n. a crystalline compound used to test for the presence of a certain dominant gene (the compound tasting bitter to those who possess the gene). |
| RHINENCEPHALONS | • RHINENCEPHALON n. the olfactory lobe of the brain. |
| SCAPHOCEPHALIES | • SCAPHOCEPHALY n. having an abnormally long and narrow boat-shaped skull. |
| TRIHALOMETHANES | • trihalomethanes n. Plural of trihalomethane. • TRIHALOMETHANE n. any of various derivatives of methane such as chloroform, that have three halogen atoms per molecule and are formed esp. during the chlorination of drinking water. |
| UNHEALTHINESSES | • unhealthinesses n. Plural of unhealthiness. • UNHEALTHINESS n. the state of being unhealthy. |