-i·dro·sis \ə̇ˈdrōsə̇s\noun combining form (plural-idro·ses \-ōˌsēz\) Etymology: New Latin, from Greek -idrōsis, from hidrōsis act of sweating, from hidroun to sweat (from hidrōs sweat) + -sis — more at sweat : a specified form of sweating < chromidrosis > < bromidrosis > < hyperidrosis >