dahlia

noun

dahl·​ia ˈdal-yə How to pronounce dahlia (audio) ˈdäl- How to pronounce dahlia (audio)
US also and British usually ˈdāl-
: any of a genus (Dahlia) of American tuberous-rooted composite herbs having opposite pinnate leaves and rayed flower heads and including many that are cultivated as ornamentals

Examples of dahlia in a Sentence

Recent Examples on the Web
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Growing nasturtiums next to dahlias will keep this insect at bay. Madeline Buiano, Martha Stewart, 10 Mar. 2026 Where dahlias and zinnias offer structure and bold blooms, cosmos add airy elegance to any garden or cut flower arrangement. Cori Sears, The Spruce, 5 Mar. 2026 Ranunculus and eucalyptus are available now, while sunflowers, dahlias, zinnias, cosmos, roses and mini marigolds will available as the season progresses. Regina Elling, San Diego Union-Tribune, 5 Mar. 2026 Crocuses, calla lilies, dahlias, irises, and tulips are some classic flowers that don't grow from seeds but from bulbs, an underground structure. Lauren David, Southern Living, 27 Feb. 2026 See All Example Sentences for dahlia

Word History

Etymology

New Latin, genus name, from Anders Dahl †1789 Swedish botanist

First Known Use

1835, in the meaning defined above

Time Traveler
The first known use of dahlia was in 1835

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Cite this Entry

“Dahlia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dahlia. Accessed 17 Mar. 2026.

Kids Definition

dahlia

noun
dahl·​ia ˈdal-yə How to pronounce dahlia (audio) ˈdäl- How to pronounce dahlia (audio)
: any of a genus of American herbs related to the daisies and having brightly colored flower heads and a root that is a tuber

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