from The Century Dictionary.
- noun A self-registering thermometer, especially one which registers the maximum or minimum temperature during long periods. Also
from the GNU version of the Collaborative International Dictionary of English.
- noun (Physics) An instrument for recording graphically the variations of temperature, or the indications of a thermometer.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A device that plots on a graph the measurements of a
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a thermometer that records temperature variations on a graph as a function of time
Sorry, no etymologies found.
To end our review of the scientific apparatus at the exhibition we shall merely mention Mr. Van Rysselberghe's registering thermometrograph (shown in Figs. 13 and 14), and shall then say a few words concerning two types of registering apparatus -- Mr. Harlacher's water-current register and Prof. Von Beetz's chronograph.
Interesting experiments were made with the thermometrograph, or marine thermometer, at 290 fathoms, without reaching the bottom, at less than two miles from land.
The temperature fell rapidly, and the thermometrograph marked only two degrees on the surface of the sea, whilst the deep water was below zero.