- helianthaceous
- \\|hēlēˌan|thāshəs\ adjective
Etymology: New Latin Helianthus + English -aceous: resembling, belonging to, or related to the genus Helianthus
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helianthaceous, a. Bot.(hiːlɪænˈθeɪʃəs)[f. mod.L. helianth-us + -aceous.]Allied to the genus Helianthus of composite plants.
Useful english dictionary. 2012.