- a part or organ resembling a barb of a feather, a fin, or the like.
- a finlet.
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Origin of pinnule
OTHER WORDS FROM pinnulepin·nu·lar [pin-yuh-ler], /ˈpɪn yə lər/, adjective
Words nearby pinnule
Example sentences from the Web for pinnule
Each pinnule has its edges so much recurved that the whole forms a sort of pouch, apparently filled with sporangia.Beautiful Ferns|Daniel Cady Eaton
They occur about midway between the central vein of the pinnule and the margin of the leaf.
The sori are in the form of lines which branch out from the lower part of the pinnule in a fan-shaped manner.
The sori are placed on small veins which grow outwards from the midrib of the pinnule.
Sporangia in oblong sori under a reflexed tooth of a pinnule; indusium broad; rachis dark and shining.The Fern Lover's Companion|George Henry Tilton