A lamp which operates by burning piped illuminating gas (or town gas). / The light produced by the burning gas in such a lamp.

(organic chemistry) A tricarboxylic acid (17~{S},18~{S})-18-(2-carboxyethyl)-20-(carboxymethyl)-12-ethenyl-7-ethyl-3,8,13,17-tetramethyl-17,18,22,23-tetrahydroporphyrin-2-carboxylic acid derived fr...

plural of profiter

(music) A musical instrument in which sound is produced by blowing against an edge or by vibrating a thin piece of wood or metal known as the reed, and in which the pitch is governed by the resonan...