- 1. n. A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under Bipinnate. Source: opted
- 2. n. One of the primary divisions of a decompound leaf. Source: opted
- 3. n. One of the divisions of a pinnate part or organ. Source: opted
- 4. n. Any species of Pinna, a genus of large bivalve mollusks found in all warm seas. The byssus consists of a large number of long, silky fibers, which have been used in manufacturing woven fabrics, as a curiosity. Source: opted
- 5. n. The auricle of the ear. See Ear. Source: opted
- 6. n. division of a usually pinnately divided leaf Source: wordnet
- 7. n. the externally visible cartilaginous structure of the external ear Source: wordnet
- 8. 1. (Bot.) (a) A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under Bipinnate. (b) One of the primary divisions of a decompound leaf. 2. (Zoöl.) One of the divisions of a pinnate part or organ. 3. Etym: [L. pinna, akin to Gr. (Zoöl.) Any species of Pinna, a genus of large bivalve mollusks found in all warm seas. The byssus consists of a large number of long, silky fibers, which have been used in manufacturing woven fabrics, as a curiosity. 4. (Anat.) The auricle of the ear. See Ear. Source: webster
- 9. n:100 n. division of a usually pinnately divided leaf Source: ecdict
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