from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Any of several tuberous-rooted plants of the genus Dahlia of the composite family, native to Mexico, Central America, and northern South America and cultivated for their showy, colorful flower heads.

from The Century Dictionary.

  • noun A genus of plants, natural order Compositæ, of which several species are known, all natives of Mexico and Central America.
  • noun [lowercase] A plant of the genus Dahlia.
  • noun [lowercase] In dyeing, a violet coal-tar color consisting of the ethyl and methyl derivatives of rosaniline.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Bot.) A genus of plants native to Mexico and Central America, of the order Compositæ; also, any plant or flower of the genus. The numerous varieties of cultivated dahlias bear conspicuous flowers which differ in color.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Any plant of the genus Dahlia, tuberous perennial flowering plants native to Mexico.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun any of several plants of or developed from the species Dahlia pinnata having tuberous roots and showy rayed variously colored flower heads; native to the mountains of Mexico and Central America and Colombia


from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin Dahlia, genus name, after Anders Dahl, (1751–1787), Swedish botanist.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Named 1791 by Spanish botanist Antonio José Cavanilles for Anders Dahl.


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  • My grandfather's favorite flower, he grew them. The word is very relaxing to me.

    February 23, 2007

  • It's relaxing to me, too...yet so little used! "...abandoning with her the environment of beetles and dahlias and passing through the air with her as four o'clock in the afternoon came to an end..." (Marquez, 100 Years of Solitude)

    October 27, 2008