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Definition of the hypoptilum in English English dictionary
- aftershaft
- hypoptilum
- An accessory plume arising from the posterior of the contour feathers of many birds
- hypoptilum
- An accessory plume arising from the posterior side of the stem of the contour feathers of many birds; called also aftershaft
- hypoptilum
- of Feather
Related Terms
the hypoptilum
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