Pinna, pinnae

(Particularly used in ferns) leaflet of a pinnate leaf, or first division of a pinnate leaf where this division is itself divided into leaflets.


A primary segment of the blade of a compound leaf or frond.


The leaflets or primary division of a pinnate leaf.


A single leaflet of a pinnate leaf.


The petiole of a pinnate leaf.


The primary axes of a twice pinnately compound leaf. Pinnae bear leaflets. In a triplely compound leaf the primary pinnae bear secondary pinnae, which bear the leaflets.


A compound leaf division or leaflet (plural: “pinnae”).


Another term for the leaflet of a pinnate or bipinnate leaf.


The outer ear, the part of the ear which is outside the head, connected by a passage to the eardrum.


 


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