organ trophosome A specialised organ found in deep-sea tube worms populating hydrothermal vent environments that is colonised by chemosynthetic bacteria which supply the host worm with organic compounds. The term may be applied to similar organs in other worms. ENVO:01000165 ENVO 2010-03-20T09:23:50Z ORCID:0000-0002-4366-3088