(television) A unit used in the measurement of composite video signals. A value of 100 IRE is defined to be +714 mV in an analog NTSC video signal.

plural of IRE unit

A unit of measure for chemicals, the dose lethal to a cat.

(astronomy) 149,597,870,700 metres, the approximate mean distance from the Earth to the Sun (the semi-major axis of Earth's orbit), (symbol AU), used to measure distances in the solar system.

(mathematics) the interval [0,1], that is the set of all real numbers x such that zero is less than or equal to x and x is less than or equal to one / (telecommunications) symbol duration time.

A durational pattern which occupies a period of time equal to a pulse or pulses on an underlying metric level.

plural of unit of measure

(trains) A locomotive with an engine, generator, and traction motors, but without a control cab.

(In the SI system of units) Any unit derived from one of the seven base units of length (meter), mass (kilogram), time (second), electric current (ampere), thermodynamic temperature (kelvin), amount of substance (mole) and luminous intensity (candela).

(military) A type of military unit armed, equipped and trained to fight in rugged, mountainous terrain.