正 zhēng/zhèng, first month of the lunar year, straight/upright/proper/main/principal/to correct... 定 dìng, to set/to fix/to determine/to decide/to order 口 kǒu, mouth/classifier for things with mouths (people, domestic animals, cannons, well... 啶 dìng, idine (chemistry) 宀 mián, "roof" radical in Chinese characters (Kangxi radical 40), occurring in 家, 定, 安 e...