(law, US) A legal rule in most patent systems that allows a court to hold a party liable for patent infringement when the infringing device or process does not fall within the literal scope of a patent claim, but nevertheless is equivalent to the claimed invention.

plural of equivalent airspeed

(aviation) Dynamic pressure expressed as airspeed; the airspeed at sea level in the International Standard Atmosphere at which an airplane would experience the same dynamic pressure as it does in its current flight conditions; calibrated airspeed corrected for errors introduced by the compressibility of air at nonzero Mach numbers.

plural of TNT equivalent

plural of equivalent variation

(aviation) In a turboprop engine, the power measured in horse power equivalent to that delivered to a propeller shaft.

(aviation) The top of the Earth's atmosphere, from 50,000 ft (the start of the stratosphere) and up (to the edge of the exosphere at 1000 mi); where the effects of exposure to the environment on human life is similar to that of exposure to space; it being physiologically incompatible with human life.

(biology) The radiation dose equivalent of consuming an average banana, equal to 0.01 mrem or 0.1 μSv.

plural of banana equivalent dose

The temperature a parcel of air at a specific temperature would have if raised from a specific pressure level to zero millibars, had all moisture condensed from it, and then lowered to 1000 millibars.