| CHEMOSPHERIC | • CHEMOSPHERIC adj. relating to the chemosphere, the outermost layer of the atmosphere. |
| HAEMORRHOIDS | • haemorrhoids n. A pathological condition caused by painful masses of dilated veins in swollen anal tissue. • haemorrhoids n. Plural of haemorrhoid. • hæmorrhoids n. Plural of hæmorrhoid. |
| HELIOCHROMES | • heliochromes n. Plural of heliochrome. • HELIOCHROME n. (tradename) a photograph in natural colours. |
| HEMIMORPHIES | • HEMIMORPHY n. the state of having a polar axis, dissimilar at the two ends. |
| HEMIMORPHISM | • hemimorphism n. The condition of being hemimorphic. • HEMIMORPHISM n. the state of being hemimorphic. |
| HEMISPHEROID | • hemispheroid n. A half of a spheroid. • HEMISPHEROID n. the half of a spheroid. |
| HOLOHEDRISMS | • HOLOHEDRISM n. the property of having the full number of symmetrically arranged planes crystallographically possible. |
| HOMESHORINGS | • HOMESHORING n. the transfer of service industry employment from offices to home-based employees with appropriate telephone and Internet facilities, also HOMESOURCING. |
| HOMOCHROMIES | • HOMOCHROMY n. protective coloration. |
| HOMOGRAPHIES | • homographies n. Plural of homography. • HOMOGRAPHY n. a type of transformation that maps straight lines onto another plane. |
| HOMOIOTHERMS | • homoiotherms n. Plural of homoiotherm. • HOMOIOTHERM n. a warm-blooded animal, also HOMEOTHERM, HOMOEOTHERM. |
| HOMOMORPHIES | • homomorphies n. Plural of homomorphy. • HOMOMORPHY n. similarity in form, as of the flowers of a plant, also HOMEOMORPHY. |
| HOMOTHERMIES | • HOMOTHERMY n. the maintenance of a constant body temperature, also HOMEOTHERMISM, HOMEOTHERMY, HOMOIOTHERMY. |
| HORSEMANSHIP | • horsemanship n. The skill of riding a horse, and sometimes of training and managing horses. • HORSEMANSHIP n. the art of riding. |
| HYPOTHERMIAS | • hypothermias n. Plural of hypothermia. • HYPOTHERMIA n. subnormal temperature of the body. |
| RHEOMORPHISM | • rheomorphism n. (Geology) The liquefaction of rock, and subsequent flowing and intrusion into surrounding rocks. • RHEOMORPHISM n. the liquefaction of rock, which results in its flowing and intruding into surrounding rocks. |
| THEOMORPHISM | • theomorphism n. The bestowal of divine attributes on humanity. • THEOMORPHISM n. the concept of man as having the form of a god. |
| THERIOMORPHS | • THERIOMORPH n. an animal form in art. |
| THERMOPHILES | • thermophiles n. Plural of thermophile. • THERMOPHILE n. a bacteria, plant etc. requiring or thriving in high temperatures, also THERMOPHIL, THERMOPHILIC, THERMOPHILOUS. |
| THERMOSIPHON | • thermosiphon n. An arrangement of siphon tubes for assisting circulation in a liquid. • THERMOSIPHON n. a method of circulating a cooling liquid through a system by using the slight difference in density between the hot and cool parts. |