What is hallelujah meaning?

Hallelujah is a Hebrew word that means "praise Yahweh" or "praise the Lord." It is a term commonly used in Jewish and Christian worship as an exclamation of praise or joy. The word is composed of two parts, "hallelu," which means praise and "Yah," which is a shortened form of Yahweh, the Hebrew name for God. Hallelujah has been used in religious music and literature for centuries and has become a popular expression of gratitude or celebration in various cultures.