Dictionary

prime time

noun

: the time in the evening when the largest number of people are watching television

: the television shows that are on during prime time

: the highest or most difficult level of use

Full Definition of PRIME TIME

1
:  the time period when the television or radio audience is the largest; also :  television shows shown in prime time
2
:  the choicest or busiest time
3
:  big time 2 <a pitcher not yet ready for prime time>
prime–time adjective
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First Known Use of PRIME TIME

1958

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