'Helianthoidea' definitions:
Definition of '
Helianthoidea
'
From:
GCIDE
Helianthoidea \He`li*an"thoi"de*a\, n. pl. [NL., fr. L. helianthes sunflower + -oid.] (Zool.) An order of Anthozoa; the Actinaria. [1913 Webster]
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