Definition of "OR"

(logic) Inclusive or; either one proposition or the other is true or both.  examples

(computer science) A lexical symbol to implement inclusive or in a computer language.  examples

(electrical engineering) A logical gate to implement inclusive or.  examples

(logic) The binary operator inclusive or, true if one at least one of two inputs is true. In infix notation.  examples

(healthcare, countable) Initialism of operating room.  quotations  examples

(sciences, uncountable) Initialism of operations research.  examples

(sports, countable) Initialism of Olympic Record.  examples

(anatomy, countable) Initialism of odorant receptor.  examples

(anatomy, countable) Initialism of olfactory receptor.  examples

(Wikimedia jargon) Initialism of original research.  examples

(military) Initialism of other ranks.

Oregon, a state of the United States of America.  examples

Orissa, a state of India.  examples