GABA Meaning of GABA in English /gab"euh/ , n. Biochem.a neurotransmitter of the central nervous system that inhibits excitatory responses. [ G(AMMA-)A(MINO)B(UTYRIC) A(CID) ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012