Definition of "anticatalyst" []

• A substance that retards or arrests a chemical reaction. (noun)
• A substance that reduces or destroys the effectiveness of a catalyst. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Their engines are feeble; the fireproofing anticatalyst for the hydrogen is experimental. ""