n. [ Auto- + chronograph. ] An instrument for the instantaneous self-recording or printing of time. Knight. [ 1913 Webster ]

n. [ Gr. &unr_; time + -graph: cf. F. chronographe. ] 1. An instrument for measuring or recording intervals of time, upon a revolving drum or strip of paper moved by clockwork. The action of the stylus or pen is controlled by electricity. [ 1913 Webster ]

2. Same as Chronogram, 1. [ R. ] [ 1913 Webster ]

3. A chronoscope. [ 1913 Webster ]

n. One who writes a chronography; a chronologer. Tooke. [ 1913 Webster ]

a. Of or pertaining to a chronograph. [ 1913 Webster ]

n. [ Gr. &unr_;. See Chronograph. ] A description or record of past time; history. [ Obs. ] Bp. Hall. [ 1913 Webster ]

n. (Astron. Physics) An instrument for obtaining an accurate record of the time at which any observed phenomenon occurs, or of its duration. It has an electro-magnetic register connected with a clock. See Chronograph. [ 1913 Webster ]

a. Belonging to the electro-chronograph, or recorded by the aid of it. [ 1913 Webster ]

n. [ Photo- + chronograph. ] 1. (Physics) An instrument for recording minute intervals of time. The record is made by the power of a magnetic field, due to an electric signaling current, to turn the plane of polarization of light. A flash, coinciding in time and duration with the signal, is thus produced and is photographed on a moving plate. [ Webster 1913 Suppl. ]

2. (Astron.) An instrument for the photographic recording of star transits. [ Webster 1913 Suppl. ]

n. Art of recording or measuring intervals of time by the photochronograph. -- Pho`to*chron`o*graph"ic -graph"ic*al a. -- Pho`to*chron`o*graph"ic*al*ly, adv. [Webster 1913 Suppl.]