Look up: ragweed

1. ragweed
   [n] - any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. Ragweed
   Ragweed: Any of a number of weedy composite herbs that produce a pollen that is a frequent cause of allergies. Of all allergy sufferers in the United States, 75% are allergic to ragweed.
   Found on http://www.medterms.com/script/main/art.
   
   
3. ragweed
   dont le pollen est responsable de la fièvre des foins. Category: General • piraterie. Category: Botany and zoology
   Found on http://www.mijnwoordenboek.nl/definition
   
   
4. Ragweed
   Rag'weed` (răg'wēd`) noun (Botany) A common American composite weed ( Ambrosia artemisiæfolia ) with finely divided leaves; hogweed. Great ragweed , a coarse American herb ( Ambrosia trifida ), with rough three-lobed opposite leaves.
   Found on http://www.encyclo.co.uk/webster/R/6
   
   
5. ragweed
   <botany> A common American composite weed (Ambrosia artemisiaefolia) with finely divided leaves; hogweed. Great ragweed, a coarse American herb (Ambrosia trifida), with rough three-lobed opposite leaves. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
6. ragweed
   noun any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
7. Ragweed
   • (n.) A common American composite weed (Ambrosia artemisiaefolia) with finely divided leaves; hogweed.
   Found on http://thinkexist.com/dictionary/meaning
   
   
8. ragweed
   (genus Ambrosia), any of a group of about 40 species of weedy plants of the family Asteraceae. Most species are native to North America. The ragweeds ... [2 related articles]
   Found on http://www.britannica.com/eb/a-z/r/6
   
   
9. Ragweed
   Ragweed is slang for cannabis.
   Found on http://www.probertencyclopaedia.com/brow
   
   
10. Ragweed
    Ragweed is slang for cannabis.
    Found on http://www.probertencyclopaedia.com/brow
    
    
11. Ragweed
    The name Ambrosia is sometimes claimed to be derived from the Ancient Greek term ἀμβροσία referring to the food of the gods of Mount Olympus that confered immortality. The term might refer to the tenacity of the plants, which makes it hard to rid an area of them if they occur as invasive w...
    Found on http://en.wikipedia.org/wiki/Ragweed
    
    
12. ragweed
    ragweed, any plant of the genus Ambrosia, coarse, weedy herbs belonging to the family Asteraceae (aster family), most of which are native to America. They have inconspicuous greenish flowers and soft subdivided leaves. Ragweeds are regarded as especially troublesome because their pollen is acknowled...
    Found on http://www.infoplease.com/ce6/sci/A08409