Definition of "heavier-than-air" []

• Of, relating to, or being an aircraft heavier than the air it displaces. (adjective)

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.

• "It wasn't long until the military opened bids for what were then called "heavier-than-air" flying machines."
• "It inaugurated the world†™ s first transatlantic heavier-than-air service, and carried passengers and cargo around the globe in the 1930†™ s and 1940†™ s."
• "It is helpful to go back to the work of the Wright brothers, whose invention of a true heavier-than-air flying machine was one kind of precursor to the Mars Landers."