pulvinus
noun
pul·vi·nus
ˌpəl-ˈvī-nəs 
-ˈvē-
-ˈvē-
plural pulvini
ˌpəl-ˈvī-ˌnī
-ˈvē-(ˌ)nē
: a swelling at the base of a petiole or petiolule
Examples of pulvinus in a Sentence
Recent Examples on the Web
While the pulvinus doesn’t exist in all plants, it’s typically found at the base of a leaf and works as a motor organ.
—
Lydia Rivers, Discover Magazine, 20 July 2021
The pulvinus cells create noticeable movement in plant leaves by enlarging and shrinking.
—Lydia Rivers, Discover Magazine, 20 July 2021
Lydia Rivers, Discover Magazine, 20 July 2021
The pulvinus cells create noticeable movement in plant leaves by enlarging and shrinking.
—Lydia Rivers, Discover Magazine, 20 July 2021
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'pulvinus.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Pulvinus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pulvinus. Accessed 16 Apr. 2024.
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