貝殼學 bèikéxué conchology Origin Definitions Defs Strokes Stroke Words Sentences Sents 贝壳 貝殼 bèiké noun shell the hard outer shell of a mollusk; seashell; clamshell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