Added 10 October 2026 selenomonad noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about selenomonad at Wordnik → Where our words come from → Any bacterium of the order Selenomonadales. Related Words: sphingomonadcellulomonadaeromonadpseudomonadbacteroidetedesulfitobacteriumporphyromonadtelonemidselenophilebolidomonadchilomonadsphingobacterium Back to today's word