proper time

noun

time measured by a clock that has the same motion as the observer. Any clock in motion relative to the observer, or in a different gravitational field, will not, according to the theory of relativity, measure proper time

This is the principal difficulty, and everything depends upon its continuance for the proper time.

The other two detectives were to wait in boats for the man who should be left in the yacht, and arrest him at the proper time.

At this time a little boy had not come home at the proper time, and the mother came to our house lamenting.

Much depends on the progress towards maturity, and the supply of food in selecting the proper time for breeding.

But the leader had selected his party well, and not a sound was made till the proper time came.

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