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 energy: conventional power plants.
8. Using means other than nuclear, biological, or chemical weapons: conventional warfare.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.