1. 1. Belief in and reverence for a supernatural power or powers regarded as creator and governor of the universe.
   2. A personal or institutionalized system grounded in such belief and worship.
2. The life or condition of a person in a religious order.
3. A set of beliefs, values, and practices based on the teachings of a spiritual leader.
4. A cause, principle, or activity pursued with zeal or conscientious devotion.

get religion Informal.

1. To become religious or devout.
2. To resolve to end one's immoral behavior.

[Middle English religioun, from Old French religion, from Latin religiō, religiōn-, perhaps from religāre, to tie fast. See rely.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.