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dahlia - 4 dictionary results

dahl⋅ia

[dal-yuh, dahl- or, especially Brit., deyl-]
–noun
1. any composite plant of the genus Dahlia, native to Mexico and Central America and widely cultivated for its showy, variously colored flower heads.
2. the flower or tuberous root of a dahlia.
3. a pale violet or amethyst color.
–adjective
4. of the color dahlia.

Origin:
1791; < NL, named after Anders Dahl (d. 1789), Swedish botanist; see -ia
dahl·ia   (dāl'yə, däl'-, dāl'-)   
n.  
  1. Any of several plants of the genus Dahlia native to the mountains of Mexico, Central America, and Colombia, having tuberous roots and showy, rayed, variously colored flower heads.
  2. The flower head of one of these plants.

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

Dahlia

Dah"lia\ (d[aum]l"y[.a] or d[=a]l"y[.a]; 277, 106), n.; pl. Dahlias. [Named after Andrew Dahl a Swedish botanist.] (Bot.) A genus of plants native to Mexico and Central America, of the order Composit[ae]; also, any plant or flower of the genus. The numerous varieties of cultivated dahlias bear conspicuous flowers which differ in color.

dahlia 
1804, named 1791 for Anders Dahl, Sw. botanist who discovered it in Mexico. No blue variety had ever been cultivated, hence "blue dahlia," fig. for "something impossible or unattainable" (1880).
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