Definition of leaf

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Leaf (n.) A special organ of vegetation in the form of a lateral outgrowth from the stem, whether appearing as a part of the foliage, or as a cotyledon, a scale, a bract, a spine, or a tendril..

Lern More About Leaf

Five-leaf :: Five-leaf (n.) Cinquefoil; five-finger.
Reniform :: Reniform (a.) Having the form or shape of a kidney; as, a reniform mineral; a reniform leaf..
Biauriculate :: Biauriculate (a.) Having two earlike projections at its base, as a leaf..
Rummage :: Rummage (v. t.) To search or examine thoroughly by looking into every corner, and turning over or removing goods or other things; to examine, as a book, carefully, turning over leaf after leaf..
Keeled :: Keeled (a.) Keel-shaped; having a longitudinal prominence on the back; as, a keeled leaf..
Lithophyll :: Lithophyll (n.) A fossil leaf or impression of a leaf.
Dorsiferous :: Dorsiferous () Bearing, or producing, on the back; -- applied to ferns which produce seeds on the back of the leaf, and to certain Batrachia, the ova of which become attached to the skin of the back of the parent, where they develop; dorsiparous..
Chlorophyll :: Chlorophyll (n.) Literally, leaf green; a green granular matter formed in the cells of the leaves (and other parts exposed to light) of plants, to which they owe their green color, and through which all ordinary assimilation of plant food takes place. Similar chlorophyll granules have been found in the tissues of the lower animals..
Angelica :: Angelica (n.) The candied leaf stalks of angelica.
Sheet :: Sheet (v. t.) A broad, thinly expanded portion of metal or other substance; as, a sheet of copper, of glass, or the like; a plate; a leaf..
Ptyxis :: Ptyxis (n.) The way in which a leaf is sometimes folded in the bud.
Vein :: Vein (n.) One of the similar branches of the framework of a leaf.
Dog's-ear :: Dog's-ear (n.) The corner of a leaf, in a book, turned down like the ear of a dog..
Cystolith :: Cystolith (n.) A concretion of mineral matter within a leaf or other part of a plant.
Jugum :: Jugum (n.) A pair of the opposite leaflets of a pinnate plant.
Pecopteris :: Pecopteris (n.) An extensive genus of fossil ferns; -- so named from the regular comblike arrangement of the leaflets.
Tripartite :: Tripartite (v. i.) Divided into three parts; triparted; as, a tripartite leaf..
Horsetail :: Horsetail (n.) A leafless plant, with hollow and rushlike stems. It is of the genus Equisetum, and is allied to the ferns. See Illust. of Equisetum..
Incised :: Incised (a.) Having deep and sharp notches, as a leaf or a petal..
Scale :: Scale (n.) Hence, any layer or leaf of metal or other material, resembling in size and thinness the scale of a fish; as, a scale of iron, of bone, etc..
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