Molecule

mol′e-kūl, n. one of the minute particles of which matter is composed: the smallest ma of any substance which retains the properties of that substance.— adj. Molec′ular , belonging to, or consisting of, molecules.— n. Molecular′ity .— Molecular attraction , attraction acting on the atoms or molecules of a body, as distinguished from attraction of gravitation. [Fr.,—L. moles , a ma .]