1. mesopelagic - Noun
2. mesopelagic - Adjective
English Wikipedia has an article on:mesopelagicWikipedia
mesopelagic (not comparable)
(oceanography) Describing a pelagic zone of the oceans between the photic epipelagic and the aphotic bathypelagic zones
mesopelagic (plural mesopelagics)
A mesopelagic fish