¦halō ̷ ̷ ¦ ̷ ̷ ̷ ̷ ̷ ̷ , -lə- noun
Etymology: New Latin, from hal- + bacterium
1. capitalized : a genus of halophilic rod or disk-shaped gram-negative aerobic primitive bacteria (family Halobacteriaceae) that live in strongly saline pools in red to orange colonies and that at low oxygen levels synthesize the purple-pigmented protein bacteriorhodopsin
2. : a bacterium of the genus Halobacterium