: a small antenna or similar appendage

Word History

First Known Use

1825, in the meaning defined above

Time Traveler
The first known use of antennule was in 1825

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Cite this Entry

“Antennule.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antennule. Accessed 7 Jul. 2026.

Kids Definition

: a small antenna (as of a crayfish)

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