| CHLOROMETHANES | • chloromethanes n. Plural of chloromethane. • CHLOROMETHANE n. an organic compound, methyl chloride. | 
| ETHNOHISTORIES | • ethnohistories n. Plural of ethnohistory. • ETHNOHISTORY n. a study of the development of cultures. | 
| HETEROCHRONIES | • heterochronies n. Plural of heterochrony. • HETEROCHRONY n. divergence from normal time sequence in development, also HETEROCHRONISM. | 
| HETEROCHRONISM | • heterochronism n. (Biology) heterochrony. • HETEROCHRONISM n. divergence from the normal time sequence in development, also HETEROCHRONY. | 
| HETEROCHRONOUS | • heterochronous adj. (Paleontology) formed at different periods. • HETEROCHRONOUS adj. divergent from the normal time sequence. | 
| HOMEOWNERSHIPS | • HOMEOWNERSHIP n. the fact of being a homeowner. | 
| HYDRONEPHROSES | • hydronephroses n. Plural of hydronephrosis. • HYDRONEPHROSIS n. distension of the kidney with urine held up as a result of obstruction in the urinary tract. | 
| HYPOMENORRHEAS | • hypomenorrheas n. Plural of hypomenorrhea. • HYPOMENORRHEA n. the condition in which the interval between two menstrual periods is increased to between 35 and 42 days, also HYPOMENORRHOEA. | 
| MORPHOPHONEMES | • morphophonemes n. Plural of morphophoneme. • MORPHOPHONEME n. either or any of two or more phonemes which form variant morphs representing one morpheme (as in wife, wives). | 
| PHOSPHORESCENT | • phosphorescent adj. Having the property of emitting light for a period of time after the source of excitation is taken away… • phosphorescent n. A phosphorescent substance. • PHOSPHORESCENT adj. exhibiting phosphorescence. | 
| PHOTOSYNTHESES | • photosyntheses n. Plural of photosynthesis. • PHOTOSYNTHESIS n. the biochemical process in which light energy is absorbed by chlorophyll, and is used to fuel the building of sugar molecules. | 
| PHYTOBENTHOSES | • PHYTOBENTHOS n. plants living at the bottom of water collectively. | 
| THOROUGHNESSES | • thoroughnesses n. Plural of thoroughness. • THOROUGHNESS n. the state of being thorough. |