withinPronunciation: /wɪðˈɪn/Translate within | into French | into German | into Italian | into Spanish Definition of within preposition 1inside (something):the spread of fire within the building inside the range of (an area or boundary):property located within the green belt inside the range of (a specified action or perception):we were within sight of the finish inside the bounds set by (a concept, argument, etc.):full cooperation within the terms of the treaty 2not further off than (used with distances):he lives within a few miles of Oxford 3occurring inside (a particular period of time):tickets were sold out within two hours 33 per cent offended again within two years of being released adverb inside; indoors:enquire within internally or inwardly:beauty coming from withinOrigin: late Old English withinnan 'on the inside'within in other Oxford dictionaries Definition of within in the US English dictionary