petiole

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pet·i·ole / ˈpetēˌōl/ • n. Bot. the stalk that joins a leaf to a stem; leafstalk. ∎ Zool. a slender stalk between two structures, esp. that between the abdomen and thorax of a wasp or ant. DERIVATIVES: pet·i·o·lar / ˌpetēˈōlər/ adj. pet·i·o·late / ˈpetēəˌlāt/ adj.

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petiole (pedicel, wasp waist) The constriction at the base of the gaster in Apocrita. The degree of constriction is varied, ranging from slight to extreme with elongation.

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petiole
1. (animal)See gaster.

2. (plant)See epinastic growth.

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petiole The stalk that attaches a leaf blade to the stem. Leaves without petioles are described as sessile.

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petiole leaf-stalk. XVIII. — F. pétiole — L. petiolus little foot, fruit-stalk, specialized by Linnaeus.

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petiole The stalk by which a leaf is attached.

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