Main Entry: tran·spi·ra·tion

Pronunciation: \ˌtran(t)s-pə-ˈrā-shən\

Function: noun

Date: 15th century

: the act or process or an instance of transpiring; especially : the passage of watery vapor from a living body (as of a plant) through a membrane or pores

— tran·spi·ra·tion·al \-shnəl, -shə-n^əl\ adjective