Hallelujah n. & interj. : Praise ye Jehovah; praise ye the Lord; -- an exclamation used chiefly in songs of praise or thanksgiving to God, and as an expression of gratitude or adoration.

Example:
Do audiences stand up during the Hallelujah chorus?

Taxonomy
Yah, praise, Hebrew, the Hebrew Bible, Hallelujah Chorus, hallelu, the book of Psalms, YHWH, free encyclopedia, God, Christians, Praise ye the Lord, languages, Yahweh, praise to God, Editio, Ruger, Hebrew words.

Defination from the web:
Hallelujah, Halleluyah, or Alleluia, is a transliteration of the Hebrew word הַלְּלוּיָהּ (Standard Halleluya, Tiberian Halləlûyāh) meaning " ... In the Hebrew Bible hallelujah is actually a two-word phrase, not one word. ... Retrieved from "http://en.wikipedia.org/wiki/Hallelujah" ...