reaction in Wingdings is ❒︎♏︎♋︎♍︎⧫︎♓︎□︎■︎

The mutual or reciprocal action of chemical agents upon eachother, or the action upon such chemical agents of some form ofenergy, as heat, light, or electricity, resulting in a chemicalchange in one or more of these agents, with the production of newcompounds or the manifestation of distinctive characters. SeeBlowpipe reaction, Flame reaction, under Blowpipe, and Flame.