plumulaceousadj.

Brit.

/ˌpluːmjᵿˈleɪʃəs/, U.S.

/ˌplumjəˈleɪʃəs/

Origin: Formed within English, by derivation. Etymons: plumule n., -aceous suffix.

Etymology: < plumule n. + -aceous suffix. Compare earlier pennaceous adj., plumulose adj.

Ornithology.

Of the nature of or resembling a down feather or plumule (plumule n. 2a); downy; spec. designating (part of) a feather having soft, separated barbs (contrasted with pennaceous).

ΘΚΠ

the world > animals > birds > feather > [adjective] > having down

pluffy1853

plumulaceous1879

1879 in Webster's Amer. Dict. Eng. Lang. Suppl. Plumulaceous, downy.

1890 E. Coues Handbk. Field & Gen. Ornithol. 139 The ventral feathers are usually more largely plumulaceous, and less flat and imbricated.

1972 A. M. Lucas & P. R. Stettenham Avian Anat.: Integument I. 271 (caption) Reduced plumulaceous barbules.

2003 Sci. Amer. Mar. 62/2 In dramatic contrast to pennaceous feathers, a plumulaceous, or downy, feather has only a rudimentary rachis and a jumbled tuft of barbs with long barbules.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	plumulaceous
释义	plumulaceousadj. Brit. /ˌpluːmjᵿˈleɪʃəs/, U.S. /ˌplumjəˈleɪʃəs/ Origin: Formed within English, by derivation. Etymons: plumule n., -aceous suffix. Etymology: < plumule n. + -aceous suffix. Compare earlier pennaceous adj., plumulose adj. Ornithology. Of the nature of or resembling a down feather or plumule (plumule n. 2a); downy; spec. designating (part of) a feather having soft, separated barbs (contrasted with pennaceous). ΘΚΠ the world > animals > birds > feather > [adjective] > having down pluffy1853 plumulaceous1879 1879 in Webster's Amer. Dict. Eng. Lang. Suppl. Plumulaceous, downy. 1890 E. Coues Handbk. Field & Gen. Ornithol. 139 The ventral feathers are usually more largely plumulaceous, and less flat and imbricated. 1972 A. M. Lucas & P. R. Stettenham Avian Anat.: Integument I. 271 (caption) Reduced plumulaceous barbules. 2003 Sci. Amer. Mar. 62/2 In dramatic contrast to pennaceous feathers, a plumulaceous, or downy, feather has only a rudimentary rachis and a jumbled tuft of barbs with long barbules. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < adj.1879
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