Meaning & use

fly-by

noun·Advanced

Last updated

UK/ˈflaɪbaɪ/
US/ˈflaɪbaɪ/

Meanings

  1. nouncountablespecialist

    A close pass of a spacecraft past a planet or moon, made to study it without landing or orbiting.

    Grammar: Often written flyby in American English: a flyby of Jupiter.

    Patterns

    • a fly-by of something

    The probe made a fly-by of Neptune and sent back stunning images.

    Scientists planned a fly-by of the comet next spring.

  2. nouncountable

    A low pass by aircraft over a place, often as a display at a ceremony or event.

    Grammar: British English often uses flypast for this sense.

    Patterns

    • a fly-by over something

    Jets performed a fly-by over the stadium before the game.

    The crowd cheered the fly-by at the air show.

Word forms

pluralfly-bys

Common combinations

close fly-by
The probe made a close fly-by of the moon.
planned fly-by
The planned fly-by was delayed a week.
perform a fly-by
Two helicopters performed a fly-by.
fly-by mission
It was a fly-by mission, not a landing.

Synonyms and how they differ

flypast
Is the usual British word for the aircraft display sense only.
pass
Is more general and does not imply flying.

Word family

fly verb
to move through the air
flyover noun
a bridge, or in American use an aircraft display

Commonly confused: fly-by or fly-by-night?

fly-by vs fly-by-night

Fly-by-night describes an unreliable business and has a different meaning.

Practice

A probe that passes close to Saturn but does not enter orbit makes a ___.

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