-thermy

-thermy

suff.
Heat: diathermy.

[New Latin -thermia, from Greek thermē, heat, from thermos, warm, hot; see gwher- in Indo-European roots.]
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.

-thermy

n combining form
indicating heat: diathermy.
[from New Latin -thermia, from Greek thermē]
-thermic, -thermal adj combining form
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

-thermy

a combining form meaning “heat,” “heat generation”: diathermy.
[< New Latin -thermia; see -therm, -y3]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.