Definition of Triosteum
: a genus of Asiatic and North American herbs (family Caprifoliaceae) having connate or perfoliate entire leaves and purple or yellowish tubular flowers usually sessile in the axils — see feverroot
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Origin and Etymology of triosteum
New Latin, short for Triosteospermum, from tri- + oste- + -spermum; from the usually three bony nutlets of the fruit
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