From Longman Dictionary of Contemporary Englishchronographchron‧o‧graph /ˈkrɒnəɡrɑːf $ ˈkrɑːnəɡræf/ noun [countable] TMCa scientific instrument for measuring periods of time
Examples from the Corpus
chronograph• A precision water-resistant chronograph for only %295!• The chronograph is the timepiece of choice for today's active man-on-the-go.• One speciality was the measurement of high-speed events, such as explosions and gunshots, using his tram chronograph, invented in 1888. 