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Definition of: frequency
(frē′kwən·sē) noun plural ·cies
1. The property or state of being frequent.
2. Physics The number of occurrences of a periodic quantity, as waves, vibrations, oscillations, in a unit of time; usually expressed as cycles per second.
3. Stat. A ratio expressing the number of times a given case, value, or score occurs in a total of relevant classified data: the frequency of marriage in a specified population.
4. Ecol. The relative number of plant and animal species in a given region.
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