Definition of Pinnule

1. Noun. Division of a usually pinnately divided leaf.

Exact synonyms: Pinna
Generic synonyms: Leaflet

Definition of Pinnule

1. n. One of the small divisions of a decompound frond or leaf. See Illust. of Bipinnate leaf, under Bipinnate.

Definition of Pinnule

1. Noun. (botany) Any of the ultimate leaflets of a bipinnate or tripinnate leaf; a subleaflet. ¹

¹ Source: wiktionary.com

Definition of Pinnule

1. a pinnate part or organ [n -S]

Medical Definition of Pinnule

1. A leaflet of a bipinnate leaf. (09 Oct 1997)

Lexicographical Neighbors of Pinnule

pinniped mammal
pinnipedes
pinnipedia
pinnipeds
pinnock
pinnocks
pinnoed
pinnothere
pinnotheres
pinnula
pinnulae
pinnular
pinnulas
pinnulate
pinnulated
pinnule (current term)
pinnules
pinny
pinnywinkles
pinochle
pinochles
pinocle
pinocles
pinocyte
pinocytic
pinocytose
pinocytosed
pinocytoses
pinocytosing
pinocytosis

Literary usage of Pinnule

Below you will find example usage of this term as found in modern and/or classical literature:

1. Science by American Association for the Advancement of Science (1883)
"A thread connected one gill pinnule to a force transducer, and the amplitude of the pinnule movements, in response to water drops, was recorded on a ..."

2. The Fossil Plants of the Devonian and Upper Silurian Formations of Canada by Geological Survey of Canada, John William Dawson (1871)
"170. pinnule Archaeopteris Halliana. 171. pinnule ... Portion of a large pinnule split at the margin. 193 Portion of a pinnule, apex. 194. ..."

3. Geological Magazine by Henry Woodward (1906)
"... did not exceed 1 cm., and the point has been restored in dotted lines in the figure. At the point in the figure marked by a ° the pinnule of a fern, ..."

4. Manual of the Botany of the Northern United Statesby Asa Gray by Asa Gray (1859)
"(1) ; portion of a pinnule (I), enlarged ; and a fruit-dot In Its ... L.; front view of a fruiting contracted pinnule, enlarged (1) ; and the some laid open ..."

5. Hooker's Journal of Botany and Kew Garden Miscellany by William Jackson Hooker (1856)
"pinnule, upper side, with fructifications, magnified. 3. pinnule, showing a few sori, which have occasionally been seen on the under side, magnified. 4. ..."

6. The Ferns and Fern Allies of New Zealand: With Instructions for Their by George Malcolm Thomson (1882)
"b, portion of frond of G. circinata (nat. size). Fig. 2. Cyathea dealbata, pinnule (nat. size); a, portion of same (mag.); b, empty involucre (mag.) Fig. 3. ..."

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