| q | an adequate or large amount |
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| q | something that has a magnitude and can be represented in mathematical expressions by a constant or a variable |
| q | a measure of the quantity of electricity (determined by the amount of an electric current and the time for which it flows) |
| q | the act of dividing into quanta or expressing in terms of quantum theory |
| q | physics: apply quantum theory to |
| q | telecommunications: approximate (a signal varying continuously in amplitude) by one whose amplitude is restricted to a prescribed set of discrete values |
| q | (physics) of or relating to a quantum or capable of existing in only one of two states |
| q | red Australian fruit |
| q | how much there is of something that you can measure |
| q | (physics) the smallest quantity of some physical property that a system can possess (according to quantum theory) |
| q | a theory of strong interactions between elementary particles (including the interaction that binds protons and neutrons in the nucleus) |
| q | a relativistic quantum theory of the electromagnetic interactions of photons and electrons and muons |