Substance That Speeds Up a Reaction
This page is the CodyCross answer for the clue below from Resorts, Group 542, Puzzle 4 (Rest and Relaxation).
Question is: Substance That Speeds Up a Reaction
and the answer is: CATALYST
Word Meaning:
CATALYST — (chemistry) A substance that increases the rate of a chemical reaction without being consumed in the process.
Definitions from Wiktionary.