Botany some of the ultimate leaflets of a bipinnately element leaf.
Zoology A featherlike or plumelike organ or part, like a small fin, or among appendages of a crinoid.
some of the ultimate leaflets of a bipinnate or tripinnate leaf; a subleaflet.
One of the little divisions of a decompound frond or leaf. See Illust. of Bipinnate leaf, under bipinnate.
Any one of a number of small, thin body organs, or parts, whenever organized in rows in order to have a plumelike appearance
In ichthyology, specifically, a little fin-like appendage.
In botany, a secondary pinna; one of the pinnately disposed divisions of a pinna: noting particularly the ultimate divisions associated with frond in ferns. Additionally pinnula. See cuts under indusium and Nothochlæna.
A small pin fixed upon a pre-telescopic astronomical instrument and serving, like picture of a gun, to enable the observer in order to make an exact pointing upon a star or any other celestial object.