Kettle's encrustation

• Successive notes on fruit showing side effect of hard water

Wiktionary Word definitions in Wiktionary
n. A white, chalky deposit of calcium carbonate found in kettles, washing machines etc., especially in a hard water area.

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ I just scrub and scrub, I've got all the limescale off the bath. ▪ The main enemy of these pumps is limescale , so consider a magnetic device on the feed into your pump. ▪ There was a lot of limescale on the bath. ▪ This unit ...

Wikipedia Word definitions in Wikipedia
Limescale is the hard, off-white, chalky deposit found in kettles, hot-water boilers and the inside of inadequately maintained hot-water central heating systems. It is also often found as a similar deposit on the inner surface of old pipes and other surfaces ...