Etymology tree Proto-Indo-European *gʷeyh₃-der. Ancient Greek βῐ́ος (bĭ́os) Ancient Greek βῐο- (bĭo-)der. English bio- Proto-Indo-European *megʰ-der.? Ancient Greek μηχανή (mēkhanḗ) Proto-Indo-European *-kos Ancient Greek -κός (-kós) Ancient Greek -ικός (-ikós) Ancient Greek μηχανικός (mēkhanikós)bor. Latin mēchanicusbor. English mechanics English biomechanics From bio- + mechanics.