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pulvinus

noun pul·vi·nus \ ˌpəl-ˈvī-nəs , -ˈvē- \

Definition of pulvinus

plural pulvini play \ˌpəl-ˈvī-ˌnī, -ˈvē-(ˌ)nē\

: a swelling at the base of a petiole or petiolule

Origin and Etymology of pulvinus

New Latin, from Latin, cushion

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First Known Use: circa 1857

in the meaning defined above

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