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[dahy-uh-thur-muh n-see] /ˌdaɪ əˈθɜr mən si/
noun, plural diathermancies.
the property of transmitting heat as electromagnetic radiation.
Origin of diathermancy
1830-40; < French diathermansie < Greek dia- dia- + thérmansis heating, equivalent to therman- (variant stem of thermaínein to warm, heat, derivative of thermós hot) + -sis -sis
Related forms
diathermanous, adjective
nondiathermanous, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for diathermanous
Historical Examples
  • The good conductor is diathermanous to the electric current; it allows free transmission without the development of heat.

British Dictionary definitions for diathermanous


noun (pl) -cies
the property of transmitting infrared radiation
Derived Forms
diathermanous, adjective
Word Origin
C19: from French diathermansie, from dia- + Greek thermansis heating, from thermainein to heat, from thermos hot
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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diathermanous in Medicine

diathermanous di·a·ther·ma·nous (dī'ə-thûr'mə-nəs)
Permeable by heat rays.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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