byte Syllabification: (byte)Pronunciation: /bīt/Translate byte | into French | into German | into Italian | into Spanish Definition of byte noun Computing a group of binary digits or bits (usually eight) operated on as a unit. Compare with bit4. a byte considered as a unit of memory size. Origin: 1960s: an arbitrary formation based on bit4 and bitebyte in other Oxford dictionaries Definition of byte in the British & World English dictionary