Definition of barbule in English:

barbule

noun ˈbɑːbjuːlˈbɑrbjul

A minute filament projecting from the barb of a feather.
Example sentencesExamples
- Accordingly, even though birds without uropygial glands preened at the same rate as birds with glands, the former may have suffered more breakage of feather barbules.
- Downy barbs that were initially sampled from the base of these feathers had microscopic characters that consisted of very long barbules.
- The barbs, in turn, may bear barbules which may hook on to the barbules of an adjoining barb.
- Well known examples include the structural colors produced by brilliant iridescent butterfly wing scales and avian feather barbules, such as the peacocks tail.
- The vanes have parallel barbs, which suggests the presence of barbules.
- In contrast, a flight feather has narrow barbules which do not cover the barbs.
- Increased plumage abrasion caused by a higher rate of preening could break feather barbules, leading to a reduction in plumage condition.
- Well defined, functional barbules are absent.
- Modern feathers evolved through the stages involving elongated scales that became broken up into barbs and barbules.
- I think they would have barbules without projections.
- The interlocking hooks and barbules allow the feather to be ‘reset’ by the bird's preening action.
- But scales are folds in skin; feathers are complex structures with a barb, barbules and hooks.
- Feathers, however bizarre or morphologically complex, consist essentially of a rachis, barbs, and barbules.
- A few species of hummingbirds and European Starling are known to produce UV hues with coherently scattering melanin arrays in feather barbules.
- It has been my impression that the mechanism whereby the barb ridges separate from one another and sculpt out the barbules, probably involves many sequential changes.
- Plumage of glandless birds was in significantly poorer condition, with more missing barbules, than the plumage of control birds with glands.
- Bird feathers illustrate optimum design, with their interlocking barbs and barbules resulting in a strong yet extremely light structure.
- The barbules are the tiny feather tip structures that come off of barbs on either side of the central stem of peacock feathers.
- The strongly iridescent colors of bird feathers are produced by arrays of melanin granules in the barbules of feathers.

Origin

Mid 19th century: from Latin barbula, diminutive of barba 'beard'.

Definition of barbule in US English:

barbule

nounˈbɑrbjulˈbärbyo͞ol

A minute filament projecting from the barb of a feather.
Example sentencesExamples
- In contrast, a flight feather has narrow barbules which do not cover the barbs.
- Modern feathers evolved through the stages involving elongated scales that became broken up into barbs and barbules.
- I think they would have barbules without projections.
- Increased plumage abrasion caused by a higher rate of preening could break feather barbules, leading to a reduction in plumage condition.
- The strongly iridescent colors of bird feathers are produced by arrays of melanin granules in the barbules of feathers.
- The barbules are the tiny feather tip structures that come off of barbs on either side of the central stem of peacock feathers.
- Well known examples include the structural colors produced by brilliant iridescent butterfly wing scales and avian feather barbules, such as the peacocks tail.
- But scales are folds in skin; feathers are complex structures with a barb, barbules and hooks.
- The vanes have parallel barbs, which suggests the presence of barbules.
- Well defined, functional barbules are absent.
- Downy barbs that were initially sampled from the base of these feathers had microscopic characters that consisted of very long barbules.
- Feathers, however bizarre or morphologically complex, consist essentially of a rachis, barbs, and barbules.
- It has been my impression that the mechanism whereby the barb ridges separate from one another and sculpt out the barbules, probably involves many sequential changes.
- Accordingly, even though birds without uropygial glands preened at the same rate as birds with glands, the former may have suffered more breakage of feather barbules.
- A few species of hummingbirds and European Starling are known to produce UV hues with coherently scattering melanin arrays in feather barbules.
- Bird feathers illustrate optimum design, with their interlocking barbs and barbules resulting in a strong yet extremely light structure.
- The barbs, in turn, may bear barbules which may hook on to the barbules of an adjoining barb.
- Plumage of glandless birds was in significantly poorer condition, with more missing barbules, than the plumage of control birds with glands.
- The interlocking hooks and barbules allow the feather to be ‘reset’ by the bird's preening action.

Origin

Mid 19th century: from Latin barbula, diminutive of barba ‘beard’.

单词	barbule
释义	Definition of barbule in English: barbule noun ˈbɑːbjuːlˈbɑrbjul A minute filament projecting from the barb of a feather. Example sentencesExamples Accordingly, even though birds without uropygial glands preened at the same rate as birds with glands, the former may have suffered more breakage of feather barbules. Downy barbs that were initially sampled from the base of these feathers had microscopic characters that consisted of very long barbules. The barbs, in turn, may bear barbules which may hook on to the barbules of an adjoining barb. Well known examples include the structural colors produced by brilliant iridescent butterfly wing scales and avian feather barbules, such as the peacocks tail. The vanes have parallel barbs, which suggests the presence of barbules. In contrast, a flight feather has narrow barbules which do not cover the barbs. Increased plumage abrasion caused by a higher rate of preening could break feather barbules, leading to a reduction in plumage condition. Well defined, functional barbules are absent. Modern feathers evolved through the stages involving elongated scales that became broken up into barbs and barbules. I think they would have barbules without projections. The interlocking hooks and barbules allow the feather to be ‘reset’ by the bird's preening action. But scales are folds in skin; feathers are complex structures with a barb, barbules and hooks. Feathers, however bizarre or morphologically complex, consist essentially of a rachis, barbs, and barbules. A few species of hummingbirds and European Starling are known to produce UV hues with coherently scattering melanin arrays in feather barbules. It has been my impression that the mechanism whereby the barb ridges separate from one another and sculpt out the barbules, probably involves many sequential changes. Plumage of glandless birds was in significantly poorer condition, with more missing barbules, than the plumage of control birds with glands. Bird feathers illustrate optimum design, with their interlocking barbs and barbules resulting in a strong yet extremely light structure. The barbules are the tiny feather tip structures that come off of barbs on either side of the central stem of peacock feathers. The strongly iridescent colors of bird feathers are produced by arrays of melanin granules in the barbules of feathers. Origin Mid 19th century: from Latin barbula, diminutive of barba 'beard'. Definition of barbule in US English: barbule nounˈbɑrbjulˈbärbyo͞ol A minute filament projecting from the barb of a feather. Example sentencesExamples In contrast, a flight feather has narrow barbules which do not cover the barbs. Modern feathers evolved through the stages involving elongated scales that became broken up into barbs and barbules. I think they would have barbules without projections. Increased plumage abrasion caused by a higher rate of preening could break feather barbules, leading to a reduction in plumage condition. The strongly iridescent colors of bird feathers are produced by arrays of melanin granules in the barbules of feathers. The barbules are the tiny feather tip structures that come off of barbs on either side of the central stem of peacock feathers. Well known examples include the structural colors produced by brilliant iridescent butterfly wing scales and avian feather barbules, such as the peacocks tail. But scales are folds in skin; feathers are complex structures with a barb, barbules and hooks. The vanes have parallel barbs, which suggests the presence of barbules. Well defined, functional barbules are absent. Downy barbs that were initially sampled from the base of these feathers had microscopic characters that consisted of very long barbules. Feathers, however bizarre or morphologically complex, consist essentially of a rachis, barbs, and barbules. It has been my impression that the mechanism whereby the barb ridges separate from one another and sculpt out the barbules, probably involves many sequential changes. Accordingly, even though birds without uropygial glands preened at the same rate as birds with glands, the former may have suffered more breakage of feather barbules. A few species of hummingbirds and European Starling are known to produce UV hues with coherently scattering melanin arrays in feather barbules. Bird feathers illustrate optimum design, with their interlocking barbs and barbules resulting in a strong yet extremely light structure. The barbs, in turn, may bear barbules which may hook on to the barbules of an adjoining barb. Plumage of glandless birds was in significantly poorer condition, with more missing barbules, than the plumage of control birds with glands. The interlocking hooks and barbules allow the feather to be ‘reset’ by the bird's preening action. Origin Mid 19th century: from Latin barbula, diminutive of barba ‘beard’.
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