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/suÂ·piÂ·naÂ·tion/ (sooâ³pÄ­-naÂ´shun) [L. supinatio ] the act of assuming the supine position, or the state of being supine. Applied to the hand, the act of turning the palm forward (anteriorly) or upward, performed by lateral rotation of the forearm. Applied to the foot, it generally implies movements resulting in raising of the medial margin of the foot, hence of the longitudinal arch.
Palmate venation shows several main veins branching from a common point of midrib at base of blade. Arcuate venation is essentially pinnate, but main veins curve to follow margin of blade. Parallel (in many monocots) shows many straight veins side by side from base to tip.lustrous or glossy (shiny), dull (green but not shiny), or glaucous (pale or whitened). Venation: The midrib is the largest, central vein, becoming the petiole below the blade.o see photographic examples, click one of the cameras in the list of botanical terms. Basic morphology: A simple leaf consists of a blade, joined to the woody twig by a stalk, the petiole.