Added 10 October 2026 selaginella noun Categories: PlantsObscure Words noun ! Definition from Wiktionary (CC BY-SA). More about selaginella at Wordnik → Where our words come from → Any of a group of ferny plants of the genus Selaginella, spike moss. Origin From the genus name. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: sparganiumsellierasarraceniaspergulasalvinialeanaglaonemasaginasalvinia Back to today's word