Added 10 October 2026 helichrysum noun Categories: PlantsObscure Words noun ! Definition from Wiktionary (CC BY-SA). More about helichrysum at Wordnik → Where our words come from → Any of the genus Helichrysum of plants related to the sunflower. Origin From the genus name. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: helianthemumhelianthushelichrysesunflowerheliconiaheliotropehawkweedheleniumhedychium Back to today's word