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tachymeter

[ta-kim-i-ter, tuh-] /tæˈkɪm ɪ tər, tə-/
noun, Surveying
1.
any of several instruments for rapidly determining distances, directions, and differences of elevation.
Origin
1855-1860
1855-60; tachy- + -meter
Related forms
tachymetry, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for tachymetry

tacheometry

/ˌtækɪˈɒmɪtrɪ/
noun
1.
(surveying) the measurement of distance, etc, using a tacheometer
Derived Forms
tacheometric (ˌtækɪəˈmɛtrɪk), tacheometrical, tachymetric, tachymetrical, adjective
tacheometrically, tachymetrically, adverb

tachymetry

/tæˈkɪmɪtrɪ/
noun
1.
another name for tacheometry

tachymeter

/tæˈkɪmɪtə/
noun
1.
another name for tacheometer
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
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Word Origin and History for tachymetry

tachymeter

n.

1836, from tachy- "swift" + -meter.

M. GAETANO CAÏRO has invented an instrument, to which he has given the name of Tachymeter (rapid measurer). Its object is to give the area of plane surfaces bounded by any outline whatever, without the necessity of any arithmetical operation. ["Magazine of Popular Science and Journal of the Useful Arts," Volume 2, 1836]

Online Etymology Dictionary, © 2010 Douglas Harper
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