noun (used with a singular verb)
the branch of geology that deals with the physics of the earth and its atmosphere, including oceanography, seismology, volcanology, and geomagnetism.
Origin of geophysics
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(functioning as singular) the study of the earth's physical properties and of the physical processes acting upon, above, and within the earth. It includes seismology, geomagnetism, meteorology, and oceanography
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
Online Etymology Dictionary, © 2010 Douglas Harper
The scientific study of the physical characteristics of the Earth, including its hydrosphere and atmosphere, and of the Earth's relationship to the rest of the universe.
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