
Molecule, n.:
	The ultimate, indivisible unit of matter.  It is distinguished
	from the corpuscle, also the ultimate, indivisible unit of matter, by a
	closer resemblance to the atom, also the ultimate, indivisible unit of
	matter ... The ion differs from the molecule, the corpuscle and the
	atom in that it is an ion ...
	-- Ambrose Bierce, "The Devil's Dictionary"
