convention

1a : agreement, contract

b : an agreement between states for regulation of matters affecting all of them an international convention banning the spread of nuclear weapons

c : a compact between opposing commanders especially concerning prisoner exchange or armistice

d : a general agreement about basic principles or procedures also : a principle or procedure accepted as true or correct by convention the conventions of grammar

2a : the summoning or convening of an assembly

b : an assembly of persons met for a common purpose a comic book convention especially : a meeting of the delegates of a political party for the purpose of formulating a platform and selecting candidates for office

c : the usually state or national organization of a religious denomination

3a : usage or custom especially in social matters conventions of society

b : a rule of conduct or behavior

c : a practice in bidding or playing that conveys information between partners in a card game (such as bridge)

d : an established technique, practice, or device (as in the theater) The usual romantic conventions made the film predictable.

Definition of convention

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