同比 Traditional form: 同比 Pinyin (reading): tóngbǐ Definitions: (statistics) compared with the same period of the previous year; year on year; year over year Characters: 同 - same, similar; together with, alike 比 - to compare, liken; comparison; than Traditional characters: 同 - same, similar; together with, alike 比 - to compare, liken; comparison; than