HALLELU'IAH, noun [Heb. praise ye Jah or Jehovah, to praise, that is, to throw, or raise the voice, to utter a loud sound; Latin ululo.] Praise ye Jehovah; give praise to God; a word used in songs or praise, or a term of rejoicing in solemn ascriptions of thanksgiving to God. It is used as a noun, or as an exclamation.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI