| BIORHYTHMS | • biorhythms n. Plural of biorhythm. • BIORHYTHM n. a periodic change in the behaviour or physiology of many animals and plants (e.g. hibernation and migration) mediated by hormones which are in turn influenced by changes in day-length. |
| HATEWORTHY | • hateworthy adj. Worthy of being hated, detestable, despicable. • HATEWORTHY adj. worthy of hate. |
| HOMOTHERMY | • HOMOTHERMY n. the maintenance of a constant body temperature, also HOMEOTHERMISM, HOMEOTHERMY, HOMOIOTHERMY. |
| HYDROPATHS | • hydropaths n. Plural of hydropath. • HYDROPATH n. a practitioner of hydropathy, the study of treating diseases with water. |
| HYDROPATHY | • hydropathy n. The therapeutic use of water, either internally or externally. • HYDROPATHY n. the study of treating diseases with water. |
| HYDROPHYTE | • hydrophyte n. (Botany) A plant that lives in or requires an abundance of water, usually excluding seaweed. • HYDROPHYTE n. an aquatic plant; an alga. |
| HYDROTHECA | • hydrotheca n. (Zoology) One of the calicles that protect the hydranths in certain Hydroidea (Thecaphora). • HYDROTHECA n. the horny cup of a hydranth. |
| HYETOGRAPH | • hyetograph n. A graphical representation of rainfall over time. • HYETOGRAPH n. an instrument for recording rainfall. |
| HYGROPHYTE | • hygrophyte n. (Biology) Any plant that thrives on very wet but not submerged ground. • HYGROPHYTE n. a plant adapted to a plentiful water-supply. |
| HYPAETHRON | • hypaethron n. An open court. • HYPAETHRON n. an open court. |
| ORTHOPHYRE | • orthophyre n. (Geology) a porphyritic rock that contains phenocrysts of orthoclase embedded in feldspar. • ORTHOPHYRE n. a fine-grained syenitic rock with orthoclase crystals. |
| POLYRHYTHM | • polyrhythm n. (Uncountable, music) Music with multiple rhythmic elements played simultaneously. • polyrhythm n. (Countable, music) A rhythm performed as part of a piece of music with multiple rhythmic elements played… • polyrhythm n. (Countable, music) Music containing two or more conflicting pulses. |
| THEROPHYTE | • therophyte n. (Biology) Any plant which survives unfavourable seasons in the form of seeds only. • THEROPHYTE n. a plant that overwinters as a seed. |
| THOROUGHLY | • thoroughly adv. In a thorough or complete manner. • THOROUGH adv. complete, also THORO. |
| THROUGHWAY | • throughway n. (US) A broad highway fit for high-speed traffic; a thoroughfare. • THROUGHWAY n. (US) a motorway, also THRUWAY. |