chemical sense
71amalgamation — (n.) 1610s, noun of action from archaic amalgam (v.) to alloy with mercury (see AMALGAMATE (Cf. amalgamate)). Figurative, non chemical sense of a combining into one uniform whole is attested from 1775 …
72catalysis — (n.) 1650s, dissolution, from Gk. katalysis dissolution, a dissolving (of governments, military units, etc.), from katalyein to dissolve, from kata down (or completely ), see CATA (Cf. cata ), + lyein to loosen (see LOSE (Cf. lose)) …
73neutralize — (v.) 1734, to render neutral (in a chemical sense), from Fr. neutraliser (17c.), from neutral (see NEUTRAL (Cf. neutral) (adj.)). Meaning to counterbalance, to kill by opposing is from 1795. Related: Neutralized; neutralizing …
74phosphorous — (adj.) 1777, phosphorescent, from PHOSPHORUS (Cf. phosphorus) + OUS (Cf. ous). The chemical sense (1794) is immediately from Fr. phosphoreux …
75alkali — [14] English acquired alkali via Latin from Arabic al qalīy ‘the ashes’, a derivative of the verb qalay ‘fry’. The implicit reference is to the plant saltwort (Latin name Salsola kali), which was burnt to obtain its alkaline ashes (Chaucer’s… …
76dialysis — [16] As in the case of its close relative analysis, the underlying etymological notion contained in dialysis is of undoing or loosening, so that the component parts are separated. The word comes ultimately from Greek diálusis, a derivative of… …
77olfactory organ — noun the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals he has a cold in the nose • Syn: ↑nose • Derivationally related forms: ↑nose (for: ↑nose) • …
78oxidation–reduction reaction — ▪ chemical reaction Introduction also called redox reaction any chemical reaction in which the oxidation number of a participating chemical species changes. The term covers a large and diverse body of processes. Many oxidation– reduction… …
79carbon group element — ▪ chemical elements Introduction any of the five chemical elements that make up Group 14 (IVa) of the periodic table namely, carbon (C), silicon (Si), germanium (Ge), tin (Sn), and lead ( …
80asymmetric synthesis — Chemical reaction by which unequal amounts of two product isomers are formed. It is normally not possible to synthesize from materials that do not have optical activity (i.e., are not chiral) one stereoisomer of a chiral compound without the… …
