ragweed
any of the composite plants of the genus Ambrosia, the airborne pollen of which is the most prevalent cause of autumnal hay fever, as the common North American species, A. trifida(great ragweed, or giant ragweed ) and A. artemisiifolia.
Origin of ragweed
1Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use ragweed in a sentence
Yet these tall Thistles and Ragweeds are only the first stage of a very interesting invasion.
The Romance of Plant Life | G. F. Scott ElliotAfter a time the snow came, a foot and a half of it, till only the tops of the seedy ragweeds showed above the level white.
The Fall of the Year | Dallas Lore Sharp
British Dictionary definitions for ragweed
/ (ˈræɡˌwiːd) /
any plant of the chiefly North American genus Ambrosia, such as A. artemisiifolia (common ragweed): family Asteraceae (composites). Their green tassel-like flowers produce large amounts of pollen, which causes hay fever: Also called: ambrosia
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
Browse