Informal A collision involving two or more aircraft while fully airborne.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "midair" in a sentence
"The flight had to make an energy landing in Manila after what they call a midair rupture."
"His awesome telekinetic powers — blowing up tanks, building nuclear reactors in midair — are almost incidental to his bewildering metaphysical insights."
"He fired a single shot at the blonde man, but was more than shocked to see that the bullet froze in midair just inches from his nose."