Browse Nearby Entries


6 dictionary results for: ragweed
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
rag·weed
[rag-weed] Pronunciation Key
[rag-weed] Pronunciation Key –noun
| 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. |
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
American Heritage Dictionary - Cite This Source - Share This
| rag·weed
(rāg'wēd') Pronunciation Key
n.
[From the ragged shape of its leaves.] |
(Download Now or Buy the Book)
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Online Etymology Dictionary - Cite This Source - Share This
ragweed
ragweed
1790, from ragged (q.v.), so called from shape of the leaves. Applied to a different plant, ragwort, from 1658. Ragwort itself is attested from c.1450.
Online Etymology Dictionary, © 2001 Douglas Harper
WordNet - Cite This Source - Share This
| ragweed | |
noun | |
| 1. | widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity [syn: ragwort] |
| 2. | any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma |
WordNet® 3.0, © 2006 by Princeton University.
American Heritage Stedman's Medical Dictionary - Cite This Source - Share This
ragweed rag·weed (rāg'wēd')
n.
Any of various weeds of the genus Ambrosia having small greenish unisexual flower heads and producing abundant pollen that is one of the chief causes of hay fever.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Webster's Revised Unabridged Dictionary - Cite This Source - Share This
Ragweed
Rag"weed\, n. (Bot.) A common American composite weed (Ambrosia artemisi[ae]folia) with finely divided leaves; hogweed. Great ragweed, a coarse American herb (Ambrosia trifida), with rough three-lobed opposite leaves.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
Copyright © 2008, Dictionary.com, LLC. All rights reserved.











