[ puhl-vahy-nuh s ]
/ 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).

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. 2019

Examples from the Web for pulvinus

British Dictionary definitions for 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