pin·na (p n  )n. pl. pin·nae (p n ) or pin·nas 1. Botany A leaflet or primary division of a pinnately compound leaf. 2. Zoology A feather, wing, fin, or similar appendage. 3. Anatomy See auricle. [Latin, feather; see pet- in Indo-European roots.] pin nal adj. |
pinna [ˈpɪnə]
n pl -nae [-niː], -nas
1. (Life Sciences & Allied Applications / Botany) any leaflet of a pinnate compound leaf
2. (Life Sciences & Allied Applications / Zoology) Zoology a feather, wing, fin, or similarly shaped part
3. (Life Sciences & Allied Applications / Anatomy) another name for auricle [2]
[via New Latin from Latin: wing, feather, fin]
| pinna (pn) Plural pinnae (p n) or pinnas A leaflet or primary division of a pinnately compound leaf, especially of a fern frond. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  pinna - division of a usually pinnately divided leafleaflet - part of a compound leaf |
| 2. |  pinna - the externally visible cartilaginous structure of the external earexternal ear, outer ear - the part of the ear visible externally tragus - a small cartilaginous flap in front of the external opening of the ear cauliflower ear - an auricle deformed by injury; common among boxers cartilaginous structure - body structure given shape by cartilage |
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