| AERENCHYMAS | • aerenchymas n. Plural of aerenchyma. • AERENCHYMA n. respiratory tissue. |
| AMETHYSTINE | • amethystine adj. Like amethyst, especially in colour; violet-purple. • AMETHYSTINE adj. of or like amethyst. |
| ETHYLAMINES | • ethylamines n. Plural of ethylamine. • ETHYLAMINE n. a colorless, mobile, inflammable liquid, very volatile and with an ammoniacal odor. |
| HENDIADYSES | • hendiadyses n. Plural of hendiadys. • HENDIADYS n. the expression of an idea by two nouns connected by and (as cups and gold) instead of by a noun and an adjective (as golden cups). |
| HONEYEATERS | • honeyeaters n. Plural of honeyeater. • HONEYEATER n. any bird of a large Australian family. |
| HYDROGENASE | • hydrogenase n. (Biochemistry) Any enzyme that catalyzes the reduction of a substrate by the reversible oxidation of hydrogen. • HYDROGENASE n. an enzyme that catalyzes hydrogen formation in certain microorganisms. |
| HYPERMNESIA | • hypermnesia n. (Psychology) An elevated level of memory recall. • HYPERMNESIA n. abnormally vivid or complete memory or recall of the past. |
| HYPERPLANES | • hyperplanes n. Plural of hyperplane. • HYPERPLANE n. a figure in hyperspace corresponding to a plane in ordinary space. |
| HYPERPNOEAS | • HYPERPNOEA n. abnormally fast breathing, also HYPERPNEA. |
| HYPERSALINE | • hypersaline adj. Having an abnormally high salinity. • HYPERSALINE adj. excessively saline. |
| MESENCHYMAL | • mesenchymal adj. Of or pertaining to the mesenchyme. • MESENCHYMAL adj. relating to mesenchyme, the embryonic tissue from which circulatory, lymphatic, skeletal, and connective tissue develop, also MESENCHYMATOUS. |
| PHAENOTYPES | • PHAENOTYPE v. to categorise by phaenotype, the sum of the attributes of an individual, regarded as resulting from the interaction of its genotype with its environment, also PHENOTYPE. |
| SARCENCHYME | • sarcenchyme n. (Zoology) One of the soft tissues of sponges. • SARCENCHYME n. a soft tissue of sponges with close-packed cells and reduced gelatinous matrix. |
| SYNANTHESES | • SYNANTHESIS n. synchronous maturity of male and female elements of plant. |
| SYNESTHESIA | • synesthesia n. (Chiefly American spelling) Alternative spelling of synaesthesia. • SYNESTHESIA n. a sensation felt in one part of the body when stimulus is applied to another part, e.g. visualization of a color on hearing a sound, also SYNAESTHESIA. |
| SYNTHETASES | • synthetases n. Plural of synthetase. • SYNTHETASE n. a kind of enzyme. |