海洋学 hǎiyángxué oceanography Origin Definitions Defs Strokes Stroke Words Sentences Sents 海洋 hǎiyáng noun ocean seas and oceans; the vast body of saltwater covering most of the Earth's surface学 學 xué nounaffix branch of learning (bound form) a subject or branch of study; often used as a suffix for -logy, -ics, or -science