shorten Syllabification: (short·en)Pronunciation: /ˈSHôrtn/Translate shorten | into French | into German | into Italian | into Spanish Definition of shorten verb make or become shorter: [with object]:he shortened his stride [no object]:around mid-September, days shorten and temperatures dip [with object] Sailing reduce the amount of (sail) exposed to the wind. (with reference to gambling odds) make or become shorter; decrease: [no object]:the odds had shortened to 14-1 [with object] Prosody & Phonetics make (a vowel or syllable) short. shorten in other Oxford dictionaries Definition of shorten in the British & World English dictionary