Use Bacteria or Yeast to Make a Substance Change
This page is the CodyCross answer for the clue below from Greece, Group 666, Puzzle 5 (Archimedes).
Question is: Use Bacteria or Yeast to Make a Substance Change
and the answer is: FERMENT
Word Meaning:
FERMENT — To react, using fermentation; especially to produce alcohol by aging or by allowing yeast to act on sugars; to brew.
Definitions from Wiktionary.