| HELMINTHOLOGIES | • HELMINTHOLOGY n. the study of parasitic worms. |
| HELMINTHOLOGIST | • helminthologist n. One versed in helminthology. • HELMINTHOLOGIST n. a specialist in helminthology. |
| HETEROCHRONISMS | • heterochronisms n. Plural of heterochronism. • HETEROCHRONISM n. divergence from the normal time sequence in development, also HETEROCHRONY. |
| HYPOMENORRHOEAS | • hypomenorrhoeas n. Plural of hypomenorrhoea. • HYPOMENORRHOEA n. the condition in which the interval between two menstrual periods is increased to between 35 and 42 days, also HYPOMENORRHEA. |
| MECHANOMORPHISM | • MECHANOMORPHISM n. the doctrine that the universe is fully explicable in mechanistic terms. |
| METHYLTHIONINES | • METHYLTHIONINE n. as in methylthionine chloride, a dark green dye used as a stain, antiseptic etc. |
| MONOPHTHONGISED | • monophthongised v. Simple past tense and past participle of monophthongise. • MONOPHTHONGISE v. to pronounce as a monophthong, also MONOPHTHONGIZE. |
| MONOPHTHONGISES | • monophthongises v. Third-person singular simple present indicative form of monophthongise. • MONOPHTHONGISE v. to pronounce as a monophthong, also MONOPHTHONGIZE. |
| MONOPHTHONGIZES | • monophthongizes v. Third-person singular simple present indicative form of monophthongize. • MONOPHTHONGIZE v. to pronounce as a monophthong, also MONOPHTHONGISE. |
| MORPHOPHONEMICS | • morphophonemics n. Morphophonology. • MORPHOPHONEMICS n. linguistic structure in terms of the phonological patterning of morphemes. |
| RHOMBENPORPHYRS | • RHOMBENPORPHYR n. an intermediate, moderately fine-grained igneous rock with feldspar phenocrysts rhombic in section, also RHOMBENPORPHYRY, RHOMBPORPHYRY. |
| SULPHONMETHANES | • SULPHONMETHANE n. a colourless crystalline compound used medicinally as a hypnotic, also SULFONMETHANE. |
| THERIANTHROPISM | • therianthropism n. The representation of deities in combined human and animal form. • THERIANTHROPISM n. the representation or worship of therianthropic forms or gods. |
| THIRTYSOMETHING | • thirtysomething n. A tricenarian: a person in their thirties, a person aged between 30 and 39 years (inclusive). • thirtysomething adj. Between 30 and 39 years of age. • thirtysomething adj. Between 30 and 39 in number. |
| 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. |