First, the mission will be precisely defined with clear realistic goals that can be achieved in a definite period of time.

The service relevant resources, processes and systems are assigned for service delivery during a definite period in time.

The Balipitha in front of the temple also gives us an almost definite period going back to 10th century.

But other marriages were also given legal status in Persia, including one which was "for a definite period only."

Is confidential information to be kept confidential indefinitely or for a definite period after the end of the Project?

And there is a definite period of time to account for it.

But the Room observed certain phenomena, which transpired over a definite period of time.

A photometric study in 2001 was unable to find a definite period of rotation.

The tradition must have been generally believed, at least for a definite period of time.

During that definite period it must have gone without protest, even from persons interested in denying it.