›the period of time that is needed to do an activity or process: a timescale for sthA draft released late last night contains no firm timescale for cutting emissions.set/give/determine a timescaleThe SEC has not yet set a timescale for registration of the new funds.within/in/over a timescaleYou have the right to cancel your order if it fails to show within the timescale specified.put a timescale on sthAt present, we are unable to put a timescale on public funding cuts.a long/short/fixed timescalea reasonable/tight/agreed timescalea 90-day/12-month/30-year, etc. timescaleBiotech companies typically have a 10 to 15-year timescale for product development.