三大洋 sāndàyáng the three major oceans Definitions Defs Origin Strokes Stroke Words Sentences Sents 三 sān numeral three the number three; 3大洋 dàyáng noun ocean The vast body of salt water that covers most of the Earth's surface; specifically refers to any of the major oceans like the 太平洋 tàipíngyáng or 大西洋 dàxīyáng.