Bluish-Green Patina Formed by Copper Oxidation
This page is the CodyCross answer for the clue below from All Things Water, Group 1283, Puzzle 3 (Paddle Boarding).
Question is: Bluish-Green Patina Formed by Copper Oxidation
and the answer is: VERDIGRIS
Word Meaning:
VERDIGRIS — A blue-green patina or rust that forms on copper-containing metals.
Definitions from Wiktionary.