plural of spoil heap

An electromechanical-optical machine that exposes a latent image on a medium by means of a computer-controlled light source.

(organic chemistry) A compound most often formed by the condensation of an alcohol and an acid, with elimination of water, which contains the functional group carbon-oxygen double bond (i.e., carbo...

(chemistry) any technique that involves the addition to a sample of an isotopically labelled compound