閉集 Save Sign in to save words Simplified: 闭集 bìjí ㄅㄧˋ ㄐㄧˊ closed set (math.) Character by character 閉(bì)close 集(jí)gather Other words read bìjí biji with other tones 筆記 筆跡 比及 嗶嘰 避忌 All 6 words read biji in any tone A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0