helianthus

[ hee-lee-an-thuh s ]
/ ˌhi liˈæn θəs /
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noun, plural he·li·an·thus·es.

any composite plant of the genus Helianthus, comprising the sunflowers.

Origin of helianthus

From New Latin, dating back to 1770–80; see origin at heli-1, -anthous
Related formshe·li·an·tha·ceous [hee-lee-uh n-they-shuh s] /ˌhi li ənˈθeɪ ʃəs/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for helianthus

helianthus

/ (ˌhiːlɪˈænθəs) /

noun plural -thuses

any plant of the genus Helianthus, such as the sunflower and Jerusalem artichoke, typically having large yellow daisy-like flowers with yellow, brown, or purple centres: family Asteraceae (composites)

Word Origin for helianthus

C18: New Latin, from Greek hēlios sun + anthos flower
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012