木卫四 Save Sign in to save words Traditional (Taiwan): 木衛四 mùwèisì ㄇㄨˋ ㄨㄟˋ ㄙˋ Callisto (moon of Jupiter), aka Jupiter IV Character by character 木(mù)surname Mu 卫(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