Added 10 October 2026 pentander noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about pentander at Wordnik → Where our words come from → Any plant of the former class Pentandria, having five stamens. Related Words: pentadelphygynanderpolyadelphhexanderpartheniumtetradelphypteridospermpetridophytepteriodophytepetalumpeltasperm Back to today's word