中大 zhōngdà [abbreviation] Origin Definitions Defs Strokes Stroke Words Sentences Sents 中大西洋脊 zhōngdàxīyángjǐ mid-Atlantic ridge the mid-Atlantic ridge空中大学 kōngzhōngdàxué university of the air A type of higher education that uses television, radio, and the internet to provide distance learning to adult students.