[verb] [T] - to discover the meaning of (information given in a secret or complicated way)Decoding the paintings is not difficult once you know what the component parts symbolise.Compare encode.(specialized) To decode (a word or phrase in a foreign language) is to understand its meaning in the correct way.Grammatical information helps learners to decode (sentences).
DECODE
Meaning of DECODE in English
Cambridge English vocab. Кембриджский английский словарь. 2012