A work or medium used (mostly) for the purpose of boosting the enjoyment of another medium.

(idiomatic) Through and through; thoroughly; entirely.

(astronomy) Faint thermal radiation that pervades all space and is thought to be the remnants of the big bang, produced during the epoch of recombination.

(Jamaica) A hard confection made with grated coconut and ginger.

plural of backroom boy

Success is achieved by hard work, not by merely wishing for it.

(astronomy) The universe's background particle radiation composed of neutrinos.

All the accumulated radiation in the universe due to star formation processes, plus a contribution from active galactic nuclei (AGNs).

plural of backfire effect

The finding that, faced with evidence that contradicts their beliefs, people can reject the evidence and believe even more strongly.