一 yī onesinglea (article)as soon asentire; whole; all; throughout"one" radical in Chinese characters (Kangxi radical 1)also pr. yāo for greater clarity when spelling out numbers digit by digit Example sentences 我有一个弟弟。 wǒ yǒu yīge dìdi. I have a younger brother 今天是星期一。 jīntiān shì xīngqī yī. Today is Monday