1. Based on or in accordance with general agreement, use, or practice; customary: conventional symbols; a conventional form of address.
2. Conforming to established practice or accepted standards; traditional: a conventional church wedding.
a. Devoted to or bound by conventions to the point of artificiality; ceremonious.
b. Unimaginative; conformist: longed to escape from their conventional, bourgeois lives.
4. Represented, as in a work of art, in simplified or abstract form.
5. Law Based on consent or agreement; contractual.
6. Of, relating to, or resembling an assembly.
7. Using means other than nuclear weapons or energy: conventional warfare; conventional power plants.