period, period of time, time period - an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"

clocking - the time taken to traverse a measured course; "it was a world record clocking"

longueur - a period of dullness or boredom (especially in a work of literature or performing art)

residence time - the period of time spent in a particular place

span - the complete duration of something; "the job was finished in the span of an hour"

stint, stretch - an unbroken period of time during which you do something; "there were stretches of boredom"; "he did a stretch in the federal penitentiary"

time scale - an arrangement of events used as a measure of duration; "on the geological time scale mankind has existed but for a brief moment"

note value, time value, value - (music) the relative duration of a musical note

rule - the duration of a monarch's or government's power; "during the rule of Elizabeth"

time - the continuum of experience in which events pass from the future through the present to the past

temporal property - a property relating to time

longness - duration as an extension

protraction, lengthiness, prolongation, continuation - the consequence of being lengthened in duration

endlessness - the property of being (or seeming to be) without end

shortness - the property of being of short temporal extent

brevity, briefness, transience - the attribute of being brief or fleeting

permanence, permanency - the property of being able to exist for an indefinite duration

impermanence, impermanency - the property of not existing for indefinitely long durations