Douglas Harper's Etymology Dictionary
Wiktionary
alt. The middle of the air, as while in flight. n. The middle of the air, as while in flight.
Usage examples of "mid-air".
Tom was justly proud, for though many aeroplanes to-day are equipped with the sending device, few can receive wireless messages in mid-air.
If it had indulged freely in the abstractions of its practices, it would doubtless have suffered the fate of Antaeus, who was finally strangled in mid-air by a giant who came over the mountains.
It was immediately following his transfer in mid-air that Bradley made out the shadowy form of a large island far ahead, and not long after, he realized that this must be the intended destination of his captors.
A shoal of cutlery, like silvery minnows in mid-air, flashed past the Archchancellor and dived away down a corridor.
They were like two tiny suns, about the size of basketballs, hovering in mid-air, shining brilliantly but giving off no heat at all.
She corrected the descent, hopped into mid-air, and came down more slowly the second time.
Today he carried courgettes and peppers to the altar, and these seemed to float through mid-air, guided simply by a mind.
He sounded like the airline pilot who, having just slipped two seemingly certain mid-air collisions and finding himself in the midst of a radar fuse-out and control-tower dysarthria, says over the intercom: "Well, ladies and gentlemen, we'll be busy up here in the cockpit making our final approach into Pittsburgh, and so we want to take this opportunity to thank you for flying American and we hope we'll see you again real soon.
When it resembled a black pea the fiery homunculus plucked it from mid-air and held it in both diminutive hands.
Communications on the same day, at 20:30 hours (local time), with the English base revealed that on July 2, at 19:45 hours, five members of that garrison had sighted celestial object north of the island, moving in a zigzagging course, stopping in mid-air for five-or ten minutes and disappearing in a vertical direction.
Already mid-air, the others flurrying away ahead of him, Arkady turned back with one cow clutched in each foreleg and bobbed his head in thanks at Temeraire.
With no limit switches, his beam elbowed at precisely the wrong angle, George Infante met his own gangsaws in mid-air.
She didn't have the expertise to change in mid-air, but she held the image he gave her in her mind and felt the peculiar wrenching of bones and muscles heralding the change.
Obviously traffic in the Hunterian atmosphere was practically non-existent and a mid-air collision nothing to be feared.
Surprised with his fork in mid-air, Matt froze and stared at her as the aria began.