An instrument carried aloft, chiefly by balloon, to gather and transmit meteorological data.
But in the stratosphere they can stay aloft for years, spread by fast winds known as jets, meaning the threat is global.
Designs exist for nuclear powered ramjets that could fly indefinitely in the atmospheres of the gas giants — this might prove a viable means of keeping an extraction factory aloft.
The sailor climbed aloft to look for land.
It was carried aloft by a converted Boeing 747 and used solely for glide-approach and landing tests.
Those include shooting civilians who tried to escape the city and ignoring the pleas of mothers holding aloft starving children on the other side of the barbed-wire barricades.
He springs forward, his sword aloft.
the explosion of the firecrackers awoke the children; the burst of an atom bomb creates enormous radiation aloft.
The move from the younger we could call him Aristophanic Socrates the Socrates who again investigates the things aloft and under the earth to the later what we could call platonic Socrates.
There towers aloft in the square the Monument of Unknown Heroes.
The balloon went aloft.
A wintry wind whipped through the park, but by 10 p.m., aloft in the tree, it was as quiet as Manhattan gets.
Launching it is a matter of snapping the parts together and throwing it into the air, whence it is carried aloft by an electric propeller.
The laser, aimed from the ground at photovoltaic cells mounted on the Pelican's underside, charged the chopper's battery, keeping her aloft for an unprecedented 12 hours and 27 minutes.
A whitish speck flattened against the rock does not prevent the condor from soaring aloft.
The high mountain passes the cloud layer to tower aloft.
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