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pinnule
[pin-yool]
noun
Zoology.
a part or organ resembling a barb of a feather, a fin, or the like.
a finlet.
Botany.a secondary pinna, one of the pinnately disposed divisions of a bipinnate leaf.
a metal plate with a small hole in it, used as a sight in a quadrant.
pinnule
/ ˈpɪnjʊlə, ˈpɪnjuːl /
noun
any of the lobes of a leaflet of a pinnate compound leaf, which is itself pinnately divided
zoology any feather-like part, such as any of the arms of a sea lily
pinnule
Any of the smaller leaflets into which each leaflet of a bipinnately compound leaf is subdivided. The leaves of many ferns are divided into pinnules.
Other Word Forms
- pinnular adjective
- ˈ辱ԲԳܱ adjective
Word History and Origins
Origin of pinnule1
Example Sentences
The cordate pinnules sometimes found here are commoner in Europe.
Its value was much impaired by his preference of the antique “pinnules” to telescopic sights on quadrants.
Arms fork once to thrice, and bear pinnules on each or on every other brachial.
It is probably a fern, more minute in its pinnules than even our smallest specimens of true maidenhair.
Ordinary frond and forked and crested varieties of the same, the crest arising from the inordinate development of the margins of the pinnules.
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