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great ragweed

DEFINITIONS OF: great ragweed

1

n a coarse annual with some leaves deeply and palmately three-cleft or five-cleft

Synonyms:
Ambrosia trifida
Type of:
ambrosia, bitterweed, ragweed
any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
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