la dureza - hardness, hardiness, toughness, harshness, callus (hardened skin)Spanish example: La dureza indica la resistencia del mineral a ser rayado.
English example: Hardness indicates the resistance of a mineral to being scratched.
Source: la dureza - hardness, hardiness, toughness, harshness, callus (hardened skin) (https://www.123teachme.com/spanish_feeds/word_of_the_day/2021/1/13)