[thur-moh-stey-buh l]
adjective Biochemistry.
  1. capable of being subjected to a moderate degree of heat without loss of characteristic properties, as certain toxins and enzymes (opposed to thermolabile).

Origin of thermostable

First recorded in 1900–05; thermo- + stable2
Related formsther·mo·sta·bil·i·ty, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for thermostable


  1. (of certain chemical and biochemical compounds) capable of withstanding moderate heat without loss of characteristic propertiesa thermostable plastic Compare thermolabile
  2. not affected by high temperatures
Derived Formsthermostability (ˌθɜːməʊstəˈbɪlɪtɪ), noun
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

thermostable in Medicine


  1. Unaffected by relatively high temperatures, as certain ferments or toxins.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.