Extra catalyst Synonyms

Definitions for Extra


  • (adjective) being over what is needed
  • (adverb) to a great degree
  • (noun) an interchangeable part or piece of equipment that is kept on hand for replacement of an original

Definitions for Catalyst


  • (noun) (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
  • (noun) something that causes an important event to happen