pinna
/ˈpɪnə/ noun
Forms pinnas pinnae
- noun (anatomy, zoology) The visible part of the ear in most therians that resides outside of the head, the auricle; outer ear excluding the ear canal.
- noun (botany) A leaflet or primary segment of a pinnate compound leaf.
- noun (zoology) A feather, wing, fin, or other similar appendage.
Synonyms
Etymology
From Latin pinna (“dorsal fin; wing, feather”). Doublet of pen, penna, and panne.
Webster’s 1913
- noun (a) A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under Bipinnate.
- noun One of the divisions of a pinnate part or organ.
Etymology [L., a feather.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “pinna”, CC BY-SA 4.0. Details