ni‧tric ac‧id /ˌnaɪtrɪk ˈæsəd/ 
 noun [uncountable][
Date: 1700-1800; 
Language: French; 
Origin: nitrique, from nitre a chemical substance, from Latin nitrum, from Egyptian ntry]
 a powerful acid that is used in explosives and other chemical products 
 [TahlilGaran] Dictionary of Contemporary English ▲