Haloid \Ha"loid\ (h[=a]"loid or h[a^]l"oid), 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.
[1913 Webster]