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An instrument using the atmospheric pressure as measured by the change in the boiling point of water to determine land elevations.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Physical Geography) an instrument for measuring altitudes by determining the boiling point of water at a given altitude
2. (Surveying) any instrument used to calculate the heights of trees by triangulation
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
an instrument for measuring altitude by the relationship between atmospheric pressure and the boiling point of a liquid.See also: Heights, Instruments
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.