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ageratum

[aj-uh-rey-tuh m, uh-jer-uh-] /ˌædʒ əˈreɪ təm, əˈdʒɛr ə-/
noun
1.
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.
2.
any of various other composite plants, as the mistflower, having blue or white flowers.
Origin
1560-1570
1560-70; < Neo-Latin; Latin agēraton < Greek agḗraton, neuter of agḗratos unaging, equivalent to a- a-6 + gērat- (stem of gêras) old age + -os adj. suffix
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for ageratum
  • Cyclic irrigation and media affect container leachate and ageratum growth.
British Dictionary definitions for ageratum

ageratum

/ˌædʒəˈreɪtəm/
noun
1.
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
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
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