— photochronography /foh'toh kreuh nog"reuh fee/ , n.
/foh'teuh kron"euh graf', -grahf'/ , n.
1. a device formerly used for taking a series of instantaneous photographs of a rapidly moving object.
2. a picture taken by such a device.
3. a chronograph in which the tracing or record is made by a pencil of light on a sensitized surface.
4. an instrument for measuring small intervals of time by the photographic trace of a pencil of light.
[ 1885-90; PHOTO- + CHRONOGRAPH ]