Definition of pinna

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Pinna (n.) A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under Bipinnate..

Lern More About Pinna

Pinnacle :: Pinnacle (n.) Anything resembling a pinnacle; a lofty peak; a pointed summit.
Pinna :: Pinna (n.) The auricle of the ear. See Ear.
Catadromous :: Catadromous (a.) Having the lowest inferior segment of a pinna nearer the rachis than the lowest superior one; -- said of a mode of branching in ferns, and opposed to anadromous..
Runcinate :: Runcinate (a.) Pinnately cut with the lobes pointing downwards, as the leaf of the dandelion..
Osmund :: Osmund (n.) A fern of the genus Osmunda, or flowering fern. The most remarkable species is the osmund royal, or royal fern (Osmunda regalis), which grows in wet or boggy places, and has large bipinnate fronds, often with a panicle of capsules at the top. The rootstock contains much starch, and has been used in stiffening linen..
Pinnace :: Pinnace (n.) A procuress; a pimp.
Pinnace :: Pinnace (n.) A small vessel propelled by sails or oars, formerly employed as a tender, or for coast defence; -- called originally, spynace or spyne..
Tamarind :: Tamarind (n.) A leguminous tree (Tamarindus Indica) cultivated both the Indies, and the other tropical countries, for the sake of its shade, and for its fruit. The trunk of the tree is lofty and large, with wide-spreading branches; the flowers are in racemes at the ends of the branches. The leaves are small and finely pinnated..
Poinciana :: Poinciana (n.) A prickly tropical shrub (Caesalpinia, formerly Poinciana, pulcherrima), with bipinnate leaves, and racemes of showy orange-red flowers with long crimson filaments..
Imparipinnate :: Imparipinnate (a.) Pinnate with a single terminal leaflet.
Pinnated :: Pinnated (a.) Consisting of several leaflets, or separate portions, arranged on each side of a common petiole, as the leaves of a rosebush, a hickory, or an ash. See Abruptly pinnate, and Illust., under Abruptly..
Unijugate :: Unijugate (a.) Having but one pair of leaflets; -- said of a pinnate leaf.
Pinnatilobate :: Pinnatilobate (a.) Having lobes arranged in a pinnate manner.
Pinna :: Pinna (n.) One of the divisions of a pinnate part or organ.
Byssus :: Byssus (n.) A tuft of long, tough filaments which are formed in a groove of the foot, and issue from between the valves of certain bivalve mollusks, as the Pinna and Mytilus, by which they attach themselves to rocks, etc..
Wallaba :: Wallaba (n.) A leguminous tree (Eperua falcata) of Demerara, with pinnate leaves and clusters of red flowers. The reddish brown wood is used for palings and shingles..
Pinnatifid :: Pinnatifid (a.) Divided in a pinnate manner, with the divisions not reaching to the midrib..
Pinnacling :: Pinnacling (p. pr. & vb. n.) of Pinnacl.
Trijugate :: Trijugate (a.) In three pairs; as, a trijugate leaf, or a pinnate leaf with three pairs of leaflets..
Pinnae :: Pinnae (pl. ) of Pinn.
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