Definition of tenulin
: a crystalline sesquiterpenoid lactone C17H22O5 obtained from plants of the genus Helenium (as H. tenuifolium)
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Origin and Etymology of tenulin
New Latin tenuifolium (specific epithet of Helenium tenuifolium) (from Latin tenuis thin + folium leaf) + -lin (as in helenalin) — more at blade
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