木衛四 Save Sign in to save words Simplified: 木卫四 mùwèisì ㄇㄨˋ ㄨㄟˋ ㄙˋ Callisto (moon of Jupiter), aka Jupiter IV Character by character 木(mù)surname Mu 衛(wèi)surname Wei 四(sì)four A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0