flyby

or fly-by

[flahy-bahy]
noun, plural fly·bys.
  1. the flight of a spacecraft close enough to a celestial object, as a planet, to gather scientific data.
  2. Aeronautics.
    1. Also called flypast.a low-altitude flight of an aircraft for the benefit of ground observers.
    2. flyover(def 1).

Origin of flyby

1950–55, Americanism; noun use of verb phrase fly by
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for flyby

flyby

noun plural -bys
  1. a flight past a particular position or target, esp the close approach of a spacecraft to a planet or satellite for investigation of conditions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012