noun

1. A conserved property of the light in an optical system which characterizes how "spread out" the light is in terms of angle and area: it is the product of its cross-sectional area (normal to the direction of propagation) and the solid angle it subtends.

Synonyms: AΩ product, acceptance, geometric extent, light grasp, light-collecting power, light-gathering power, optical extent, throughput

noun

1. The rate at which data is transferred through a system.

2. (operations) The rate of production; the rate at which something can be processed.

   “The factory managed a throughput of 120 units per hour.”