First Known Use: 1866
Dictionary
ageratum
noun ag·er·a·tum \ˌa-jə-ˈrā-təm\
plural ag·er·a·tum also ag·er·a·tums
Definition of AGERATUM
: any of a genus (Ageratum) of annual tropical American composite herbs often cultivated for their small showy heads of usually blue or white flowers; also : a related blue-flowered perennial (Eupatorium coelestinum)
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Origin of AGERATUM
New Latin, genus name, from Greek agēratos ageless, from a- + gēras old age — more at geront-
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