Air drill
a drill powered by compressed air.
historical examples
the more recent forms perform the same amount of work as the air drill, with a consumption of about one-tenth the power.
every-day science: volume vi. the conquest of nature henry smith williams
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an enclosure, usually of sheet metal, that conducts heated or conditioned air. historical examples nerve and air duct, therefore, are the essentials; the rest is so much material in reserve for the process of the metamorphosis. the life of the fly j. henri fabre thus the efficiency of fireplaces may be materially increased, the degree […]
- Air embolism
noun the presence in the tissues and blood of a gas, such as air or nitrogen bubbles, caused by an injection of air or, in the case of nitrogen, by an abrupt and substantial reduction in the ambient pressure see decompression sickness historical examples danger from air embolism is exceedingly doubtful, unless great quant-ties were […]
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noun an engine that uses the expansion of heated air to drive a piston a small engine that uses compressed air to drive a piston historical examples the air engine would in many respects possess advantages over the steam engine, if it could be worked economically. great facts frederick c. bakewell
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a measure of the effectiveness of a material in absorbing nuclear radiation, expressed as the thickness of an air layer (at 0° c and 1 atmosphere) causing the same absorption.
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an express service for shipping small packages of goods by air: includes ground pickup at origin and delivery at destination. the goods shipped by this service. to send or transport by air express: your package will be air-expressed and should reach its destination tomorrow. pertaining to, using, or sent by air express: your air-express package […]