dahlia definition, dahlia meaning | English dictionary

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1    any herbaceous perennial plant of the Mexican genus Dahlia, having showy flowers and tuberous roots, esp. any horticultural variety derived from D. pinnata: family Compositae (composites)  
2    the flower or root of any of these plants  
     (C19: named after Anders Dahl, 18th-century Swedish botanist; see -ia)  
English Collins Dictionary - English Definition & Thesaurus  
See also:

cactus dahlia, Dahl, Dali, Dalian

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"Collins English Dictionary 5th Edition first published in 2000 © HarperCollins Publishers 1979, 1986, 1991, 1994, 1998, 2000 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"