egestion
noun
eges·tion i-ˈjes-chən 
-ˈjesh-
: the act or process of discharging undigested or waste material from a cell or organism
specifically : defecation
egest
i-ˈjest
transitive verb egestive
i-ˈje-stiv
adjective 
Word History
Etymology
Middle English egestioun, borrowed from Middle French & Latin; Middle French egestion, borrowed from Latin ēgestiōn-, ēgestiō, from ēges-, variant stem of ēgerere "to carry away, remove, discharge" (from ē- e- entry 1 + gerere "to carry, bear") + -tiōn-, -tiō, suffix of verbal action — more at jest entry 1
First Known Use
1547, in the meaning defined above
Medical Definition
egestion
noun
eges·tion i-ˈjes(h)-chən
: the act or process of discharging undigested or waste material from a cell or organism
specifically : defecation