Dictionary
Thesaurus
Sentence Examples

Dictionary Home » Dictionary Definitions » pinnule

pinnule

(pin′yo̵̅o̅l′)

noun

any of the smallest divisions of a leaf which is doubly compound, esp. in ferns
any of the lateral branches of the arm of a crinoid

Origin: ModL pinnula < L, dim. of pinna, wing, feather: see pen

Related Forms:

pinnulate adjective or pinnulated

See pinnule in American Heritage Dictionary 4

noun pl. pin·nules also pin·nu·lae (pĭnˈyə-lēˌ)

Botany Any of the ultimate leaflets of a bipinnately compound leaf.
Zoology A featherlike or plumelike organ or part, such as a small fin, or one of the appendages of a crinoid.

Origin:

Origin: Latin pinnula

Origin: , diminutive of pinna, feather; see pet- in Indo-European roots

.

Related Forms:

pinˈnu·lar adjective

Learn more about pinnule

pinnule science

link/cite print suggestion box

More from YD

About YourDictionary Advertisers Contact Us Privacy Policy Terms of Use Help
© 1996-2013 LoveToKnow, Corp. All Rights Reserved. Audio pronunciation provided by LoveToKnow, Corp.