ageratum

[ aj-uh-rey-tuh m, uh-jer-uh- ]
/ ˌædʒ əˈreɪ təm, əˈdʒɛr ə- /

noun

any of several composite plants of the genus Ageratum, especially A. houstonianum, having heart-shaped leaves and small, dense, blue, lavender, or white flower heads, often grown in gardens.
any of various other composite plants, as the mistflower, having blue or white flowers.

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Origin of ageratum

1560–70; < New Latin; Latin agēraton < Greek agḗraton, neuter of agḗratos unaging, equivalent to a- a-6 + gērat- (stem of gêras) old age + -os adj. suffix

Words nearby ageratum

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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British Dictionary definitions for ageratum

ageratum
/ (ˌædʒəˈreɪtəm) /

noun

any tropical American plant of the genus Ageratum, such as A. houstonianum and A. conyzoides, which have thick clusters of purplish-blue flowers

Word Origin for ageratum

C16: New Latin, via Latin from Greek agēraton that which does not age, from a- 1 + gērat-, stem of gēras old age; the flowers of the plant remain vivid for a long time
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012