| AEROHYDROPLANE | • AEROHYDROPLANE n. a winged hydroplane or flying-boat. |
| CROTONALDEHYDE | • crotonaldehyde n. (Organic chemistry) The unsaturated aliphatic aldehyde CH3-CH=CH-CHO that is used in organic synthesis. • CROTONALDEHYDE n. a pungent liquid aldehyde obtained by dehydration of aldol. |
| 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. |
| HYDROCORALLINE | • HYDROCORALLINE n. a member the Hydrozoa, which includes millepores etc. |
| HYDROGENOLYSES | • hydrogenolyses n. Plural of hydrogenolysis. • HYDROGENOLYSIS n. a chemical reaction in which a compound is decomposed by hydrogen. |
| HYDROGENOLYSIS | • hydrogenolysis n. (Chemistry) the cleavage of a molecule, especially that of a carbon-carbon bond, with the addition of… • HYDROGENOLYSIS n. a chemical reaction in which a compound is decomposed by hydrogen. |
| HYDROLYSATIONS | • hydrolysations n. Plural of hydrolysation. • HYDROLYSATION n. the process of hydrolysing, also HYDROLYZATION. |
| HYDROLYZATIONS | • hydrolyzations n. Plural of hydrolyzation. • HYDROLYZATION n. the process of hydrolyzing, also HYDROLYSATION. |
| HYDROPONICALLY | • hydroponically adv. Using hydroponics. • HYDROPONIC adv. relating to hydroponics, the practice of growing plants in a chemical solution without soil. |
| HYDROXYLATIONS | • hydroxylations n. Plural of hydroxylation. • HYDROXYLATION n. the act of hydroxylating. |
| 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. |
| 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. |
| LABYRINTHODONT | • labyrinthodont adj. (Zoology) Having teeth with a labyrinthine (maze-like) internal structure. • labyrinthodont n. Any extinct amphibian of the subclass Labyrinthodontia. • LABYRINTHODONT n. an extinct amphibian, so called from a mazy pattern on a section of its teeth. |
| LYMPHOADENOMAS | • LYMPHOADENOMA n. a tumour of the lymph glands, aka Hodgkin's disease. |
| RADIOTELEPHONY | • radiotelephony n. The transmission of sound (in both directions) using modulated radio waves rather than wires. • radio␣telephony n. The transmission of speech using modulated radio waves. • RADIOTELEPHONY n. communication by radiotelephone. |