[ag.er.a.tum] n, pl -tum also -tums [NL, genus name, fr. Gk ageratos ageless, fr. a- + geras old age--more at geront-] (1866): any of a genus (Ageratum) of tropical American composite herbs often cultivated for their small showy heads of blue or white flowers; also: a related blue-flowered plant (Eupatorium coelestinum)
AGERATUM
Meaning of AGERATUM in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012