\Am"i*din\, n. [Cf. F. amidine, fr. amido? starch, fr. L.
amylum, Gr. ? fine meal, neut. of ? not ground at the mill,
-- hence, of the finest meal; 'a priv. + ?, ?, mill. See
{Meal}.] (Chem.)
Start modified by heat so as to become a transparent mass,
like horn. It is soluble in cold water.