any point in the air not contiguous with the earth or other solid surface: to catch a ball in midair.

Origin of midair

First recorded in 1660–70; mid- + air1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for mid-air



  1. some point above ground level, in the air
  2. (as modifier)a midair collision of aircraft
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

Word Origin and History for mid-air

also midair, 1660s, from mid + air (n.1). Lit. "the part of the air between the clouds and the air near the ground."

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with mid-air


see under leave hanging.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.