Added 9 October 2026 single-celled adjective Categories: Describing WordsObscure Words adjective ! Definition from WordNet 3.1, Princeton University. More about single-celled at Wordnik → Where our words come from → Having a single cell (and thus not divided into cells). Related Words: unicellularunicelledmonocellularone-celleduninucleatedunisexualuninuclearmononucleateunarymonociliatedsimpleuninucleate Back to today's word