vital statistics noun[plural only]3 •The size of a woman's bust, waist and hips, normally measured in inches.My vital statistics are 41, 19, 36. •Statistics of births, marriages and deaths.The Office of National Statistics maintains Britain's vital statistics. •A concise set of trivia on a subject, sometimes in table format.The vital statistics of the Ferrari F430 are 4.3 litre V8 engine, 6-speed transmission, 2,600 mm wheelbase, and RMR (rear mid-engine, rear-wheel drive) engine and drive layout.