dried root of a South American shrub, used as an emetic, purgative, nauseant, etc., 1710, borrowing via Portuguese of a shortened form of Tupi ipecacuana (a word attested in English from 1682), a medicinal plant of Brazil. The Indian word is said to mean "small plant causing vomit."
iopterous
iota
IOU
Iowa
IPA
ipecac
ipse dixit
ipseity
ipsilateral
ipso facto
ir-
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