HARDNESS
12
Scrabble
12
WWF
H(4) A(1) R(1) D(2) N(1) E(1) S(1) S(1)
NWL/TWL ✓ Collins ✓ WWF ✓
Definition
noun
- The quality of being hard.
- An instance of this quality; hardship.
- The quantity of calcium carbonate dissolved in water, usually expressed in parts per million (ppm).
Source: Wiktionary
