| DEXAMETHASONES | • dexamethasones n. Plural of dexamethasone. • DEXAMETHASONE n. a synthetic glucocorticoid used esp. as an anti-inflammatory agent. |
| DEXAMPHETAMINE | • dexamphetamine n. Dextroamphetamine. • DEXAMPHETAMINE n. the dextrorotatory isomer of amphetamine, used as a stimulant. |
| HEXACTINELLIDS | • hexactinellids n. Plural of hexactinellid. • HEXACTINELLID n. a kind of six-rayed sponge. |
| HEXOSAMINIDASE | • hexosaminidase n. (Biochemistry) Any enzyme that catalyzes the hydrolysis of terminal hexosamine residues in hexosaminides. • HEXOSAMINIDASE n. either of two hydrolytic enzymes that catalyze the splitting off of a hexose from a ganglioside and are deficient in some metabolic diseases. |
| HYDROEXTRACTOR | • hydroextractor n. A machine that uses a rotating drum to remove excess water from textiles. • HYDROEXTRACTOR n. a drying machine that works centrifugally. |
| HYDROXYAPATITE | • hydroxyapatite n. A basic calcium phosphate mineral that is the principal inorganic constituent of bone and teeth. • HYDROXYAPATITE n. a complex phosphate of calcium that occurs as a mineral and is the chief structural element of vertebrate bone. |
| HYDROXYLAMINES | • hydroxylamines n. Plural of hydroxylamine. • HYDROXYLAMINE n. a colorless odorless nitrogenous base that resembles ammonia in its reactions. |
| HYDROXYLATIONS | • hydroxylations n. Plural of hydroxylation. • HYDROXYLATION n. the act of hydroxylating. |
| HYPOMIXOLYDIAN | • hypomixolydian adj. (Music) Describing a mode of church music represented by a major scale from D to G. • HYPOMIXOLYDIAN adj. applied in old church music to a mode extending from d to d with g as its final. |
| PHOTOOXIDATION | • photooxidation n. (Physics, chemistry) The loss of an electron from a photoexcited species. • photooxidation n. (Chemistry) The reaction of something with oxygen in the presence of light. • PHOTOOXIDATION n. oxidation under the influence of radiant energy, as light. |
| PHOTOOXIDATIVE | • photooxidative adj. That causes, or undergoes photooxidation. • PHOTOOXIDATIVE adj. relating to photooxidation. |