[ foh-tuh-kron-uh-graf, -grahf ]
/ ˌfoʊ təˈkrɒn əˌgræf, -ˌgrɑf /


a device formerly used for taking a series of instantaneous photographs of a rapidly moving object.
a picture taken by such a device.
a chronograph in which the tracing or record is made by a pencil of light on a sensitized surface.
an instrument for measuring small intervals of time by the photographic trace of a pencil of light.

Nearby words

  1. photochemistry,
  2. photochemotherapy,
  3. photochromic,
  4. photochromic lens,
  5. photochromy,
  6. photocoagulation,
  7. photocoagulator,
  8. photocompose,
  9. photocomposer,
  10. photocomposition

Origin of photochronograph

First recorded in 1885–90; photo- + chronograph

Related formspho·to·chro·nog·ra·phy [foh-toh-kruh-nog-ruh-fee] /ˌfoʊ toʊ krəˈnɒg rə fi/, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for photochronograph


/ (ˌfəʊtəʊˈkrɒnəˌɡrɑːf, -ˌɡræf) /


physics an instrument for measuring very small time intervals by the trace made by a beam of light on a moving photographic film
Derived Formsphotochronography (ˌfəʊtəʊkrəˈnɒɡrəfɪ), noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012