pinna, pinnule
(noun) division of a usually pinnately divided leaf
Source: WordNet® 3.1
pinnule (plural pinnules)
(botany) Any of the ultimate leaflets of a bipinnate or tripinnate leaf; a subleaflet.
(zoology) A part or an organ which resembles the barb of a feather, particularly the side branches on the stalks of crinoids; Any of the lateral divisions of the finger-like stalks of an encrinite.
• (subleaflet): pinnula
Source: Wiktionary
Pin"nule, n. Etym: [L. pinnula, dim. of pinna feather: cf. F. pinnule.]
1. (Bot.)
Definition: One of the small divisions of a decompound frond or leaf. See Illust. of Bipinnate leaf, under Bipinnate.
2. (Zoöl.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition
27 May 2025
(noun) the property of being directional or maintaining a direction; “the directionality of written English is from left to right”
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.
