\Ha"loid\ (? or ?), a. [Gr. "a`ls, "alo`s salt + -oid:
cf. F. halo["i]de.] (Chem.)
Resembling salt; -- said of certain binary compounds
consisting of a metal united to a negative element or
radical, and now chiefly applied to the chlorides, bromides,
iodides, and sometimes also to the fluorides and cyanides. --
n. A haloid substance.