White Residue Experienced in Hard Water Areas
This page is the CodyCross answer for the clue below from The 70's, Group 330, Puzzle 3 (Enterprise Shuttle).
Question is: White Residue Experienced in Hard Water Areas
and the answer is: LIMESCALE
Word Meaning:
LIMESCALE — A white, chalky deposit of calcium carbonate found in kettles, washing machines etc., especially in a hard water area.
Definitions from Wiktionary.