HARD-ROCK


Meaning of HARD-ROCK in English

/hahrd"rok'/ , adj.

(loosely) of or pertaining to igneous or metamorphic rocks, as in mining (hard-rock mining) and geology (hard-rock geology) . Cf. soft-rock geology .

[ 1920-25 ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .