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ageratum

[ aj-uh-rey-tuhm, uh-jer-uh- ]

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.


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
“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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Word History and Origins

Origin of ageratum1

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
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Word History and Origins

Origin of ageratum1

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
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Example Sentences

There were new flowers planted, too, among them gomphrena, ageratum, pansies and cosmos.

They learned that cosmos must be picked in bud, ageratum is less delicate than bachelor’s buttons, and the sappy, sticky calendulas stems should be booted from their bouquets.

There is the red, white and blue table with blue and white ageratum and red and white vinca.

But our gardens owe to this family innumerable beautiful and showy plants such as the China aster, the chrysanthemum, the cosmos, zinnia, dahlia, ageratum, gaillardia, coreopsis, sunflower, etc., etc.

Eupatorium—Thoroughwort Two forms are in the market—E. ageratoides, bearing numerous small white flowers in late summer, and E. cœlestinum, with light blue flowers similar to the ageratum.

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agerAgesilaus II