空大 kōngdà National Open University Origin Definitions Defs Strokes Stroke Words Sentences Sents 空 kōng nounlocative abbreviation of 空中 kōngzhōng in the sky in the air; overhead; aerial; high above the ground大 dà noun abbreviation of 大学 大學 dàxué university university; college; a higher education institution that provides teaching and research across various academic departments