test-flew ˈtest-ˌflü How to pronounce test-fly (audio) ; test-flown ˈtest-ˌflōn How to pronounce test-fly (audio) ; test-flying

transitive verb

: to subject to a flight test
test-fly an experimental plane

Word History

First Known Use

1936, in the meaning defined above

Time Traveler
The first known use of test-fly was in 1936

Dictionary Entries Near test-fly

Cite this Entry

“Test-fly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/test-fly. Accessed 31 Mar. 2023.

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