释义 |
Definition of plumule in English: plumulenoun ˈpluːmjuːlˈplumjul 1Botany The rudimentary shoot or stem of an embryo plant. Example sentencesExamples - Radicles or plumules were excised from the embryos and similarly incubated.
- The embryo epidermis, the plumule and the radicle tissues were never probed.
Synonyms sprout, shoot, flowerlet, floret 2Ornithology A bird's down feather, numbers of which form an insulating layer under the contour feathers. Example sentencesExamples - The second group includes down feathers, or plumules, which are softer and shorter than contour feathers.
- Geese are larger than ducks so their down plumules are larger and typically geese from colder climates such as central and northern Europe have the largest plumules.
Derivatives adjective ˌpluːmjʊˈleɪʃəsˌplumjəˈleɪʃəs Ornithology (of a feather) having soft, separated barbs. plumulaceous feathers often are used for insulation
adjective ˈpluːmjʊləˈplumjələr Botany Relating to the rudimentary shoot or stem of an embryo plant. in seedlings, the plumular tip is usually bent like a hook
Origin Early 18th century: from French plumule or Latin plumula 'small feather', diminutive of pluma 'down'. Definition of plumule in US English: plumulenounˈplumjulˈplo͞omyo͞ol 1Botany The rudimentary shoot or stem of an embryo plant. Example sentencesExamples - Radicles or plumules were excised from the embryos and similarly incubated.
- The embryo epidermis, the plumule and the radicle tissues were never probed.
Synonyms sprout, shoot, flowerlet, floret 2Ornithology A bird's down feather, numbers of which form an insulating layer under the contour feathers. Example sentencesExamples - Geese are larger than ducks so their down plumules are larger and typically geese from colder climates such as central and northern Europe have the largest plumules.
- The second group includes down feathers, or plumules, which are softer and shorter than contour feathers.
Origin Early 18th century: from French plumule or Latin plumula ‘small feather’, diminutive of pluma ‘down’. |