| ANTIHYDROGENS | • antihydrogens n. Plural of antihydrogen. • ANTIHYDROGEN n. an antimatter form of hydrogen. |
| BODYSNATCHERS | • bodysnatchers n. Plural of bodysnatcher. • body-snatchers n. Plural of body-snatcher. • body␣snatchers n. Plural of body snatcher. |
| CHIMNEYBOARDS | • CHIMNEYBOARD n. a board blocking up a fireplace. |
| DEHYDROGENASE | • dehydrogenase n. (Biochemistry) Any of several enzymes that catalyze the removal of hydrogen (a proton) from biological compounds. • DEHYDROGENASE n. an enzyme that accelerates the removal of hydrogen from metabolites and its transfer to other substances. |
| DISHONOURABLY | • dishonourably adv. (Britain) Alternative spelling of dishonorably. • DISHONOURABLE adv. not honourable, also DISHONORABLE. |
| DYSMENORRHEAL | • dysmenorrheal adj. Relating to dysmenorrhea. • DYSMENORRHEAL adj. suffering from dysmenorrhea, painful menstruation, also DYSMENORRHOEAL. |
| DYSMENORRHEAS | • dysmenorrheas n. Plural of dysmenorrhea. • DYSMENORRHEA n. painful menstruation, also DYSMENORRHOEA. |
| DYSMENORRHOEA | • dysmenorrhoea n. Alternative spelling of dysmenorrhea. • dysmenorrhœa n. Obsolete form of dysmenorrhea. • DYSMENORRHOEA n. painful menstruation, also DYSMENORRHEA. |
| HYALURONIDASE | • hyaluronidase n. (Biochemistry) Any enzyme that catalyses the hydrolysis of hyaluronic acid. • HYALURONIDASE n. a mucolytic enzyme that facilitates the spread of fluids through tissues by lowering the viscosity of hyaluronic acid. |
| HYBRIDISATION | • hybridisation n. Alternative form of hybridization. • HYBRIDISATION n. the process of hybridising, also HYBRIDIZATION. |
| HYDNOCARPATES | • HYDNOCARPATE n. any salt or ester of hydnocarpic acid. |
| HYDRODYNAMICS | • hydrodynamics n. (Physics) The scientific study of fluids in motion. • HYDRODYNAMICS n. the study of movement in liquids, also HYDROMECHANICS. |
| HYDROGENATORS | • hydrogenators n. Plural of hydrogenator. • HYDROGENATOR n. an agent that hydrogenates. |
| HYDROLYSATION | • hydrolysation n. Alternative form of hydrolyzation. • HYDROLYSATION n. the process of hydrolysing, also HYDROLYZATION. |
| HYDROMEDUSANS | • HYDROMEDUSAN n. a hydromedusa, also HYDROMEDUSA, HYDROMEDUSOID. |
| HYPOCHONDRIAS | • hypochondrias n. Plural of hypochondria. • HYPOCHONDRIA n. suffering from imaginary illness. |
| PARAHYDROGENS | • PARAHYDROGEN n. a spin isomer of hydrogen. |
| SYNARTHRODIAL | • synarthrodial adj. Relating to synarthrosis. • SYNARTHRODIAL adj. of, relating to, or being a synarthrosis. |