coreopsis

UK: /ˌkɒrɪˈɒpsɪs/ US: (kôr′ē op′sis, kōr′-)

WordReference Random House Unabridged Dictionary of American English © 2025

co•re•op•sis  (kôr′ē op′sis, kōr′-), n. 

1. Plant Biology any composite plant of the genus Coreopsis, including familiar garden species having yellow, brownish, or yellow-and-red ray flowers.

• Greek kore- (stem of kóris) bedbug + -opsis -opsis; so named from the shape of seed
• Neo-Latin
• 1745–55

Collins Concise English Dictionary © HarperCollins Publishers::

coreopsis / ˌkɒrɪˈɒpsɪs/ noun

1. any plant of the genus Coreopsis, of America and tropical Africa, cultivated for their yellow, brown, or yellow-and-red daisy-like flowers: family Asteraceae (composites)

Etymology: 18th Century: from New Latin, from Greek koris bedbug + -opsis; so called from the appearance of the seed