pulvinus

[ puhl-vahy-nuhs ]
/ pʌlˈvaɪ nəs /

noun, plural pul·vi·ni [puhl-vahy-nahy]. /pʌlˈvaɪ naɪ/.

Botany. a cushionlike swelling at the base of a leaf or leaflet, at the point of junction with the axis.
Architecture. pulvinar (def. 2).

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Origin of pulvinus

First recorded in 1855–60, pulvinus is from the Latin word pulvīnus cushion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for pulvinus

British Dictionary definitions for pulvinus

pulvinus
/ (pʌlˈvaɪnəs) /

noun plural -ni (-naɪ)

a swelling at the base of a leafstalk: changes in its turgor pressure cause changes in the position of the leaf

Word Origin for pulvinus

C19: from Latin: cushion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012