| Deletery | a. [ LL. deleterius: cf. F. délétère. ] Destructive; poisonous. [ Obs. ] “Deletery medicines.” Hudibras. [ 1913 Webster ] |
| Deletery | n. That which destroys. [ Obs. ] [ 1913 Webster ] They [ the Scriptures ] are the only deletery of heresies. Jer. Taylor. [ 1913 Webster ] |