a low-density type of concrete throughout which small air bubbles are dispersed in order to increase its frost resistance: used for making roads. With 1 per cent of air, the loss of strength is approximately 5 per cent
noun an opening in an aircraft through which air is drawn, esp for the engines the amount of air drawn in the part of a carburettor or similar device through which air enters an internal-combustion engine any opening, etc, through which air enters, esp for combustion or cooling purposes Historical Examples The air-intake dust screen […]
- Air-lift pump
noun a pump that pumps liquid by injecting air into the lower end of an open pipe immersed in the liquid: often used in boreholes
- Air-sea rescue
noun an air rescue at sea
to send or ship via aircraft: to air-ship machine parts overseas.