Definition of Pinnule. Meaning of Pinnule. Synonyms of Pinnule

Here you will find one or more explanations in English for the word Pinnule. Also in the bottom left of the page several parts of wikipedia pages related to the word Pinnule and, of course, Pinnule synonyms and on the right images related to the word Pinnule.

Definition of Pinnule

Pinnule
Pinnule Pin"nule, n. [L. pinnula, dim. of pinna feather: cf. F. pinnule.] 1. (Bot.) One of the small divisions of a decompound frond or leaf. See Illust. of Bipinnate leaf, under Bipinnate. 2. (Zo["o]l.) Any one of a series of small, slender organs, or parts, when arranged in rows so as to have a plumelike appearance; as, a pinnule of a gorgonia; the pinnules of a crinoid.

Meaning of Pinnule from wikipedia

- compound leaf, or a pinnate subdivision of a multipinnate leaf is called a pinnule or pinnula. Pinnate leaf of a legume with 10 leaflets Mimosa pudica folding...
- crinoids the five arms are subdivided into ten or more. These have feathery pinnules and are spread wide to gather planktonic particles from the water. At some...
- the stipe are known as pinnae and are often again divided into smaller pinnules. Fern stems are often loosely called rhizomes, even though they grow underground...
- which each pinna are divided are called pinnules, and the extensions of the rachis that support these pinnules, are called rachillae. Rarely, a frond may...
- usually attached to a pad of tissue that was probably homologous to a pinnule on the vegetative fronds. For instance, Crossotheca synangia bore elongate...
- oblong-deltoid and 3–4 cm (1.2–1.6 in) by 1.5–2 cm (0.6–0.8 in). Each pinnule possesses up to 10 pairs of pinnae. The fronds of these plants are either...
- several branching off the rachis. Each leaflet is called a pinnule. The group of pinnules on each secondary vein forms a pinna; for example, Albizia (silk...
- leukopenia penn-, pinn- feather Latin penna, pinna pennate, pinnacle, pinnate, pinnule pent- five Gr**** πέντε (pénte), πεντάς, πεντάδος (pentás, pentádos), πεντάκις...
- with a large upward-pointing pinnule at the base, and the other pinnules decreasing in size toward the pinna tip; the pinnules have softly bristly tips....
- leaflets or pinnae, each divided into 10–20 pairs of secondary leaflets or pinnules. Pollen grains are elongated, approximately 52 µm in size.[citation needed]...