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protoptile

noun
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pro·​top·​tile | \ (ˈ)prō¦täptə̇l \
plural -s

Definition of protoptile

: one of the first set of down feathers in young birds having two sets of down

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History and Etymology for protoptile

prot- + -ptile

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Cite this Entry

“Protoptile.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protoptile. Accessed 28 Sep. 2020.

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