noun🔗Share불산A solution of hydrogen fluoride, HF, in water; it is a weak but very corrosive acid, used in the production of fluorine compounds, and in metallurgy."The etching artist carefully used hydrofluoric acid to create intricate designs on the glass surface. "조각가는 유리 표면에 복잡한 디자인을 만들기 위해 불산을 조심스럽게 사용했다.chemistrysubstancecompoundsciencematerialChat with AIVocabulary GamePractice Reading