单词 | pinnule |
释义 | pinnule/ˈpɪnjuːl![]() noun 1 Botany A secondary division of a pinnate leaf, especially of a fern.The most common elements are parallel-veined leaves that resemble cordaites but that could be isolated pinnules of a pinnate leaf....
1.1 Zoology A part or organ like a small wing or fin, especially a side branch on the arm of a crinoid.Fishelson and Nichols observed fish targeting organisms sheltering in the arms and pinnules of living crinoids....
OriginLate 16th century (denoting one of the sights of an astrolabe): from Latin pinnula 'small wing', diminutive of pinna. |
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