Thiokol[t̸hī′ə kôl′, -kōl′]
Thiokol definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of various synthetic rubbery materials resistant to oil, grease, and water, used as sealants, for hosing and tank linings, etc.
Origin: arbitrary coinage
Thiokol definition by American Heritage Dictionary
A trademark used for any of various polysulfide polymers in the form of liquids, water dispersions, and rubbers used in seals and sealants.