plural of activation analysis

(chemistry) Any of several similar radiochemical techniques of analysis in which a subatomic particle or gamma ray is captured by a nuclide to form a second stable nuclide which is then measured.

The increase in rate of a chemical reaction caused by the presence of a catalyst. / An amount of catalyst, expressed as the increase of the rate of its reaction.

(fencing) false attack.

plural of active couple

(chemistry) A transitional structure, in an energetically excited state, that forms between the reactants of a chemical reaction and breaks down to form the products

Of or pertaining to a class action.

a redressable action figure, like the original GI Joe. / sometimes, a doll or figure with a mechanical feature.

plural of action doll

plural of action figure