duration
lasting for a small amount of time
lasting for a large amount of time
lasting for a very short time
the typical or normal length of time
the total length of time from start to finish
the entire length of time for an event or process
the length of time that is anticipated
the longest possible period of time
the shortest possible period of time
continuing for a longer time than is usual or expected
the probable length of time
restricted to a specific length of time
the length of time that is wanted
the perfect or most suitable length of time
for a period of time that has no fixed end
the mathematical average length of time
for the whole time that something continues
used with an adjective to describe the length of time (e.g., of short duration)
during the entire period of something
to make the length of time less
to make the length of time longer
to make the length of time greater
to make the length of time shorter
to make an approximate judgement of the length of time
to determine the length of time mathematically
to set a maximum length of time
to make the length of time shorter
to find out or establish the length of time
to find the size or amount of time