单词 | plumule |
释义 | plumule/ˈpluːmjuːl![]() noun 1 Botany The rudimentary shoot or stem of an embryo plant.The embryo epidermis, the plumule and the radicle tissues were never probed....
2 Ornithology A bird’s down feather, numbers of which form an insulating layer under the contour feathers.The second group includes down feathers, or plumules, which are softer and shorter than contour feathers....
Derivativesplumulaceoussense 2. plumular (in sense 1). OriginEarly 18th century: from French plumule or Latin plumula 'small feather', diminutive of pluma 'down'. |
随便看 |
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。