plural flybys
1
: a prearranged usually low-altitude flight by one or more airplanes over a public gathering (such as an air show)
2
a
: a flight of a spacecraft past a celestial body (such as Mars) close enough to obtain scientific data
b
: a spacecraft that makes a flyby

Examples of flyby in a Sentence

Recent Examples on the Web
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In fact, the probe actually overtook Voyager 2 on the way to Jupiter and arrived their first for a flyby in March 1979. Tariq Malik, Space.com, 5 Sep. 2026 During one such flyby in 2021, the spacecraft captured some photographs of the surface from just 199 kilometers (123 miles) away. Adam Kovac, Scientific American, 3 Sep. 2026 But this weekend’s flyby was especially low and dramatic, generating global interest after it was shown as part of the pregame broadcast, and sparking a flurry of videos shot by witnesses. Michelle Gumede, Los Angeles Times, 31 Aug. 2026 Triton’s nitrogen geyser system Voyager 2 observed at least four dark plumes erupting from Triton, Neptune’s largest moon, during its 1989 flyby. Atharva Gosavi, Interesting Engineering, 22 Aug. 2026 See All Example Sentences for flyby

Word History

First Known Use

1953, in the meaning defined at sense 1

Time Traveler
The first known use of flyby was in 1953

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Cite this Entry

“Flyby.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flyby. Accessed 7 Sep. 2026.

Kids Definition

plural flybys
1
: a usually low-altitude flight past a chosen place by one or more aircraft
2
a
: a flight of a spacecraft past a heavenly body (as Mars) close enough to obtain scientific information
b
: a spacecraft that makes a flyby
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