| CHOMOPHYTES | • chomophytes n. Plural of chomophyte. • CHOMOPHYTE n. a plant growing on rocky ledges. |
| HAEMOLYMPHS | • haemolymphs n. Plural of haemolymph. • HAEMOLYMPH n. the bloodlike fluid of invertebrates, also HEMOLYMPH. |
| HELIOCHROMY | • heliochromy n. (Dated) The art of producing colour photographs. • HELIOCHROMY n. photography in natural colours. |
| HOMEOMORPHY | • homeomorphy n. (Biology) The evolution of similar external forms from very distant ancestors. • homeomorphy n. (Mathematics) The formation of a new graph by inserting new nodes along existing edges. • HOMEOMORPHY n. the state of being homeomorphic, also HOMOMORPHY. |
| HOMEOTHERMY | • homeothermy n. The state or condition of being homeothermic. • HOMEOTHERMY n. the maintenance of a constant body temperature, also HOMEOTHERMISM, HOMOIOTHERMY, HOMOTHERMY. |
| HOMOEOPATHY | • homoeopathy n. Alternative spelling of homeopathy. • homœopathy n. Alternative spelling of homeopathy. • HOMOEOPATHY n. the use of minute quantities of medications that in large amounts, produce symptoms like those of the disease being treated, also HOMEOPATHY. |
| HOMOPHYLIES | • homophylies n. Plural of homophyly. • HOMOPHYLY n. resemblance due to common ancestry. |
| HONEYMONTHS | • honey-months n. Plural of honey-month. • HONEYMONTH v. (obsolete) to spend one's honeymoon, also HONEYMOON. |
| HYLOTHEISMS | • HYLOTHEISM n. the doctrine that there is no God but matter and the universe. |
| HYMENOPHORE | • hymenophore n. (Mycology) The part of a fungus fruiting body which produces spore-bearing cells. • HYMENOPHORE n. the fruiting body of some basidiomycetous fungi. |
| HYPOTHERMAL | • hypothermal adj. Involving extremely low temperatures. • hypothermal adj. (Geology) Formed or deposited under hypothermal conditions. • HYPOTHERMAL adj. of or relating to a hydrothermal metalliferous ore vein deposited at high temperature. |
| HYPOTHERMIA | • hypothermia n. (Pathology) Abnormally low body temperature; specifically, below 35 degrees Celsius for humans. • HYPOTHERMIA n. subnormal temperature of the body. |
| HYPOTHERMIC | • hypothermic adj. Affected by hypothermia; having an abnormally low body temperature. • HYPOTHERMIC adj. relating to hypothermia. |
| HYPSOCHROME | • hypsochrome adj. Hypsochromic. • HYPSOCHROME n. a shift to a shorter wavelength in the absorption spectrum of a compound. |
| PHYTOCHROME | • phytochrome n. (Biochemistry) Any of a class of pigments that control most photomorphogenic responses in higher plants. • PHYTOCHROME n. a plant pigment which absorbs red or infrared rays and acts as an enzyme controlling growth. |
| SHAMEWORTHY | • shameworthy adj. Worthy of shame; shameful. • SHAMEWORTHY adj. worthy of shame. |
| SYNCHROMESH | • synchromesh n. A system of synchronized transmission found in modern gearboxes to make gear changing easier and smoother. • synchromesh n. (By extension) A device which functions like a synchronized transmission. • synchromesh adj. Having the quality of smoothly exchanging interlocking forces. |