n.
Pronunciation: p ə - ' sta-sh( ē - ˌ ) ō , - ' stä-
Function: noun
Inflected Form: plural -chios
Etymology: Italian pistacchio, from Latin pistacium pistachio nut, from Greek pistakion, from pistak ē pistachio tree, of Iranian origin; akin to Persian pistah pistachio tree
Date: 1598
: a small Asian tree ( Pistacia vera ) of the cashew family whose drupaceous fruit contains a greenish edible seed also : its seed