a‧mi‧no ac‧id /əˌmiːnəʊ ˈæsəd, əˌmaɪ- $ -noʊ-/
noun [countable][
Date: 1800-1900;
Origin: amine type of chemical compound (19-21 centuries), from ammonia]
one of the substances that combine to form
proteins [TahlilGaran] Dictionary of Contemporary English ▲