What is the meaning of the word "META" ?

Frederick M. Ahl, professor of ancient Greek literature at the Cornell University Classics Department, says "meta is a prefix (not a word on its own) which means "behind" or "hidden". Meta implies the part of something that is not immediately visible, is in the background, but which is there nonetheless and has an effect. We get the word metaphysics, the study of the non-physical universe, from meta".

Meta 並非一個單一字詞,通常是其他名詞複合字的前置詞,具有「之後」或「隱含」的意思,它所表示的意思是:「某些事物無法立即可見、存在於背景中、雖然無物卻有一影響力」的部分。

What is the meaning of the word "Muse" ?

In Greek mythology, the Muses are nine goddesses who embody the right evocation of myth, inspired through remembered and improvised song and traditional music and dances.