n.
Pronunciation: ˌ tran(t)s-p ə - ' r ā -sh ə n
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 \ -shn ə l, -sh ə -n ə l \ adjective