Added 10 October 2026 metatheria noun Categories: AnimalsObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about metatheria at Wordnik → Where our words come from → Pouched animals. Related Words: eutheriatherapsidcarnivoramorphacarnivoraformestribosphenidaplacentaliamacropodiformescarnivoraatlantogenatalaurasiatheriamammaliaformes Back to today's word