otherwhen adverb 1noun 1forms 1 adverb1 •(rare) Elsewhen, sometime or somewhen else, another time.In the contrasting phenomenological approach — because elsewhere presences here and otherwhen presences now — elsewhere and otherwhen also are present to one another, each in its own way. — 2008 noun1 •(rare) Other time (sometime else).Otherwheres and Otherwhens: Excerpts from a Gazetteer of Collective Remembering and Forgetting — 2000 formsotherwhens