• synonyms


[ta-kim-i-ter, tuh-]
noun Surveying.
  1. any of several instruments for rapidly determining distances, directions, and differences of elevation.
Show More

Origin of tachymeter

First recorded in 1855–60; tachy- + -meter
Related formsta·chym·e·try, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for tachymeter


  1. another name for tacheometer
Show More
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

Word Origin and History for tachymeter


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]
Show More
Online Etymology Dictionary, © 2010 Douglas Harper