| AEROHYDROPLANE | • AEROHYDROPLANE n. a winged hydroplane or flying-boat. |
| DACTYLOGRAPHER | • DACTYLOGRAPHER n. one who studies fingerprints. |
| DEHYDRORETINOL | • dehydroretinol n. (Organic chemistry) A derivative of retinol having an extra double bond; vitamin A2. • DEHYDRORETINOL n. vitamin A2. |
| DYSMENORRHOEAL | • dysmenorrhoeal adj. Alternative form of dysmenorrheal. • dysmenorrhœal adj. Obsolete form of dysmenorrheal. • DYSMENORRHOEAL adj. suffering from dysmenorrhoea, painful menstruation, also DYSMENORRHEAL. |
| FURFURALDEHYDE | • furfuraldehyde n. (Organic chemistry) furfural. • FURFURALDEHYDE n. a liquid obtained by heating bran with dilute sulphuric acid, also FURAL, FURFURAL, FURFUROL, FURFUROLE, FUROL, FUROLE. |
| GREATHEARTEDLY | • greatheartedly adv. In a greathearted manner; displaying greatheartedness. • GREATHEARTED adv. characterized by bravery. |
| HEARTRENDINGLY | • heartrendingly adv. In a heartrending manner. • heart-rendingly adv. In a heart-rending manner. • HEARTRENDING adv. causing great grief. |
| HYDROCHLORIDES | • hydrochlorides n. Plural of hydrochloride. • HYDROCHLORIDE n. a chemical complex composed of an organic base in association with hydrogen chloride. |
| HYDROCORALLINE | • HYDROCORALLINE n. a member the Hydrozoa, which includes millepores etc. |
| HYDROGRAPHICAL | • hydrographical adj. Hydrographic. • HYDROGRAPHICAL adj. relating to hydrography, the study of bodies of water, also HYDROGRAPHIC. |
| HYDROSULPHURIC | • hydrosulphuric adj. Alternative spelling of hydrosulfuric. • HYDROSULPHURIC adj. formed by a combination of hydrogen and sulphur. |
| HYDROTHERMALLY | • hydrothermally adv. By hydrothermal means. • HYDROTHERMAL adv. designating naturally hot underground water that has geological effects. |
| HYDROXYPROLINE | • hydroxyproline n. (Biochemistry) A hydroxy derivative of the amino acid proline found in the structural proteins of connective tissue. • HYDROXYPROLINE n. an amino acid. |
| HYPERPOLARISED | • hyperpolarised v. Simple past tense and past participle of hyperpolarise. • HYPERPOLARISE v. to increase the difference in electric potential across a cell membrane, also HYPERPOLARIZE. |
| HYPERPOLARIZED | • hyperpolarized v. Simple past tense and past participle of hyperpolarize. • HYPERPOLARIZE v. to produce an increase in potential difference across a biological membrane, also HYPERPOLARISE. |