Added 10 October 2026 phenomenalism noun Categories: Rare Words noun ! Definition from Wiktionary (CC BY-SA). More about phenomenalism at Wordnik → Where our words come from → The doctrine that physical objects exist only as perceptual phenomena or sensory stimuli Related Words: epiphenomenalismperceptionismmetaphenomenonphenomenonperceptperceptumpresentationismmentalismperceptionistobservation Back to today's word