What is the meaning of the term "Turangalila" in Olivier Messiaen's symphony of that name?

The title of the work, and those of its movements, were a late addition to the project; they were first described by Messiaen in a diary entry in early 1948.

He derived the title from two Sanskrit words, turanga and lîla, which roughly translate into English as "love song and hymn of joy, time, movement, rhythm, life, and death", and described the joy of Turangalîla as "superhuman, overflowing, dazzling and abandoned".

https://en.wikipedia.org/wiki/Turangal%C3%AEla-Symphonie