| Necessarian | n. [ Cf. F. nécessarien. See Necessary. ] An advocate of the doctrine of philosophical necessity; a necessitarian. [ 1913 Webster ] |
| Necessarian | a. Of or pertaining to necessarianism. [ 1913 Webster ] |
| Necessarianism | n. The doctrine of philosophical necessity; necessitarianism. Hixley. [ 1913 Webster ] |