Definition from macmillandictionary.com
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the rules and conventions of the House of Commons
She rebelled against convention and refused to marry.
the conventions of Greek architecture
Her later novels abandon the narrative conventions of 19th-century fiction.
The government’s action may violate the European Convention on Human Rights.
Most European countries have signed up to the Geneva Convention.
Chicago was chosen as the site for an international crime convention.
the convention of the National Organization for Women