different between petiole vs pulvinus
petiole
English
Etymology
Borrowed from French pétiole, and its source, Late Latin petiolus (“little foot”), diminutive form of Latin p?s (“foot”).
Pronunciation
- (UK) IPA(key): /?p?t???l/
- (US) IPA(key): /?p?di?o?l/
Noun
petiole (plural petioles)
- (botany) The stalk of a leaf, attaching the blade to the stem.
- Synonym: pedicel (stalk of a flower)
- 1978, Harry T. Valentine, Estimating Defoliation of Hardwoods Using Blade-petiole Relations, Forest Service Research Paper NE 405, US Department of Agriculture, page 1,
- Most insects consume tissue from the leaf blade were measured just past the twist on the side away only, leaving the leaf petioles unscathed.
- 1992, Karl J. Niklas, Plant Biomechanics, University of Chicago Press,page 167,
- By contrast, the petioles of large pinnate leaves, as well as stems, typically resist torsion by placing stiff materials with high elastic moduli (like sclerenchyma) toward the perimeters of their cross sections.
- 2000, Mike Hansell, Bird Nests and Construction Behaviour, Cambridge University Press, page 116,
- An example of this is leaf petioles. Some species of trees have pinnate leaves which, when the leaves fall, shed pinnae from the petiole, which is then left as a tapering, somewhat flexible rod.
- (entomology, insect anatomy) A narrow or constricted segment of the body of an insect; especially, the metasomal segment of certain Hymenoptera, such as wasps.
- Synonym: pedicel (used more generally, of arthropods)
- (entomology) The stalk at the base of the nest of the paper wasp.
Usage notes
- The presence of a petiole (narrow body segment) is the defining characteristic distinguishing the suborder Apocrita (ants, bees and wasps) from the rest of order Hymenoptera (i.e., from the paraphyletic suborder Symphyta).
Derived terms
- petiolar
- petiolary
- postpetiole
Translations
Further reading
- petiole (botany) on Wikipedia.Wikipedia
- petiole (insect anatomy) on Wikipedia.Wikipedia
petiole From the web:
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pulvinus
English
Etymology
Unadapted borrowing from Latin pulv?nus. Doublet of pillow.
Noun
pulvinus (plural pulvinae or pulvini)
- (botany) A joint on a plant leaf or petiole that may swell and cause movement of the leaf or leaflet.
Further reading
- Adrian D. Bell, Plant Form (new ed.), Timber Press, 2008. ?ISBN
Latin
Etymology
From pulvis (“dust, powder”) +? -?nus (“-ine”), for the filler of a pillow.
Pronunciation
- (Classical) IPA(key): /pul?u?i?.nus/, [p????u?i?n?s?]
- (Ecclesiastical) IPA(key): /pul?vi.nus/, [pul?vi?nus]
Noun
pulv?nus m (genitive pulv?n?); second declension
- cushion, pillow, bolster
- an elevated piece of arable land; a raised bed
Declension
Second-declension noun.
Descendants
- Italian: pulvino
- Old Leonese: [Term?]
- Asturian: povin
- ? English: pulvinus (learned)
- ? West Germanic: *pulw? (see there for further descendants)
Further reading
- pulvinus in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
- pulvinus in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
- pulvinus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
- pulvinus in The Perseus Project (1999) Perseus Encyclopedia?[1]
- pulvinus in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin
pulvinus From the web:
- what is pulvinus leaf base
- what is pulvinus in biology
- what is pulvinus class 11
- what does pulvinus mean
- what does pulvinus mean in latin
- what is pulvinus meaning in hindi
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- what is pulvinus for class 7
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