• (a.) Of, pertaining to, or designating, an acid known only in its salts (the metatungstates) and properly called polytungstic, or pyrotungstic, acid.
Met`a·tung'stic adjective [ Prefix meta- + tungstic .] (Chemistry) Of, pertaining to, or designating, an acid known only in its salts (the metatungstates ) and properly called polytungstic , or pyrotungstic , acid.