Definitions

1. noun

A genus of bioluminescent marine animals, typically small, free-floating jellyfish-like creatures.

“The scientists studied the unique bioluminescent properties of the renilla species.”

2. proper noun

A genus of jellyfish, specifically Renilla reniformis, used as a source of the luciferin, renilla luciferin.

“Researchers used the renilla luciferin to measure ATP levels in the cells.”