共价键 Traditional form: 共價鍵 Pinyin (reading): gòngjiàjiàn Definitions: covalent bond (chemistry) Characters: 共 - all, total; together; to share 价 - price, value 键 - lock, door bolt; key Traditional characters: 共 - all, total; together; to share 價 - price, value 鍵 - lock, door bolt; key