Result from Foreign Dictionaries (2 entries found)
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Chronoscope \Chron"o*scope\, n. [Gr. ? time + -scope.]
An instrument for measuring minute intervals of time; used in
determining the velocity of projectiles, the duration of
short-lived luminous phenomena, etc.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
chronoscope
n 1: an instrument for accurate measurements of small intervals
of time