四维空间 Traditional 四維空間 sì wéi kōng jiān 🔊 four-dimensional space (math.) + Keep this word Meanings sì wéi kōng jiān 四維空間 four-dimensional space (math.) Its characters 四sìfourHSK 1维wéito preserve空kōngemptyHSK 4间jiānbetweenHSK 2