chronograph

chronograph [kron-uh-graf, -grahf] Word Origin noun

1. a timepiece fitted with a recording device, as a stylus and rotating drum, used to mark the exact instant of an occurrence, especially in astronomy.
2. a timepiece capable of measuring extremely brief intervals of time accurately, as a stopwatch able to record fractions of a second as well as elapsed time.

verb (used with object)

3. to time by means of a chronograph.

Origin of chronograph First recorded in 1655–65; chrono- + -graph Related formschro·nog·ra·pher [kruh-nog-ruh-fer] /krəˈnɒg rə fər/, nounchron·o·graph·ic [kron-uh-graf-ik] /ˌkrɒn əˈgræf ɪk/, adjectivechron·o·graph·i·cal·ly, adverbchro·nog·ra·phy, noun British Dictionary definitions for chronographically chronograph noun

1. an accurate instrument for recording small intervals of time
2. any timepiece, esp a wristwatch designed for maximum accuracy

Derived Formschronographer (krəˈnɒɡrəfə), nounchronographic (ˌkrɒnəˈɡræfɪk), adjectivechronographically, adverb Word Origin and History for chronographically chronograph n.

“precise time-measuring device,” 1868, from chrono- “time” + -graph “instrument for recording; something written.” Cf. Greek khronographos “recording time and events” (adj.); “a chronicler” (n.).