thy·mic I. \ˈtīmik, ˈthī-\adjective Etymology: International Scientific Vocabulary thym- (I) + -ic : relating to or derived from thyme II. \ˈthīmik\adjective Etymology:thym- (II) + -ic : of, relating to, or involving the thymus III. \ˈthīmik\adjective Etymology:thym- (III) + -ic : of or relating to emotion or emotional lability