The Chinese character or word 天 means sky or heaven. In pinyin romanization it is written as tīan and pronounced a little like “ten”. Tian is composed of several other character elements such as 一 yī, meaning one, and also 大 dà, meaning large. Here 一 yī sits above the character 大 dà giving us 天 above all other big things. Therefore 天 means supreme, sky and heaven. 天 also means day, for example 一天 meaning one day.