LOX Meaning of LOX in English [lox] n [liquid oxygen] (1923): liquid oxygen [2]lox n, pl lox or lox.es [Yiddish laks, fr. MHG lahs salmon, fr. OHG; akin to OE leax salmon] (1941): smoked salmon Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012