Which dictionary did you find that in?I think that "tense" refers to a period of time (e.g. from 15:00 yesterday to 10:30 tomorrow), but "time" refers to a particular point in time which is usually stated in "hours:minutes" (e.g. at 15:25 Monday).
Which dictionary definition is it your reading of? If you can provide that, we can look at how you may have misunderstood part of it. This will help you in your future use of dictionaries.That is my reading .
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