negative ion
51Ion — /uy on/, n. 1. Class. Myth. the eponymous ancestor of the Ionians: a son of Apollo and Creusa who is abandoned by his mother but returns to become an attendant in Apollo s temple at Delphi. 2. (italics) a drama on this subject (415? B.C.) by… …
52negative valence — noun 1. : the valence of a negatively charged ion 2. : the number of electrons an atom can take up oxygen has a negative valence of 2 …
53ION — n. m. T. de Physique Atome, molécule, fragment de molécules d’un corps dissocié par l’électrolyse et qui porte une charge électrique positive ou négative. Lorsqu’on soumet de l’eau salée à l’action d’un courant électrique, les ions positifs… …
54ion propulsion — Rocketry. a projected type of propulsion for vehicles in outer space, the exhaust consisting of positive ions and negative electrons repelled from the vehicle by electrostatic forces, resulting in a very high exhaust velocity. * * * …
55ion — i|on [ˈaıən US ˈaıən, ˈaıa:n] n technical [Date: 1800 1900; : Greek; Origin: , present participle of ienai to go ] an atom which has been given a positive or negative force by adding or taking away an ↑electron …
56ion — an atom with a positive charge because it has had electrons removed or a negative charge because it has had electrons added …
57ion — [ ʌɪən] noun an atom or molecule with a net electric charge through loss or gain of electrons, either positive (a cation) or negative (an anion). Origin C19: from Gk, neut. pres. participle of ienai go …
58ion — noun (C) technical an atom which has been given a positive or negative force by adding or taking away an electron …
59ion trap — noun : a device that prevents the formation of a discolored spot on a television screen by diverting the negative ions from the cathode that would cause it …
60DART ion source — A capsule being analyzed is held in the sample chamber between the DART ion source (right) and the spectrometer inlet (cone on left). DART (Direct Analysis in Real Time) is an atmospheric pressure ion source that instantaneously ionizes gases,… …
