引ひっかき硬かたさひっかきかたさじ字FuriganaMeanings1nounscratch hardnessphysics›Technical term in physics and materials science; measures a material's resistance to scratching, often using the Mohs scale.鉱こう物ぶつのひっかき硬かたさはモース硬こう度ど計けいで測