Connects at least two alternative words, phrases, clauses, sentences, etc. each of which could make a passage true. In English, this is the "inclusive or." The "exclusive or" is formed by "either[…]or".

(logic, electronics) Alternative form of OR

(obsolete) Early (on). / (obsolete) Earlier, previously.

(heraldry) Of gold or yellow tincture on a coat of arms.

(now archaic or dialect) Before; ere. Followed by "ever" or "ere".

(heraldry) The gold or yellow tincture on a coat of arms.

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

(healthcare, countable) Initialism of operating room. / (sciences, uncountable) Initialism of operations research. / (sports, countable) Initialism of Olympic Record.

Oregon, a state of the United States of America. / Orissa, a state of India.

(logic) Inclusive or; either one proposition or the other is true or both. / (computer science) A lexical symbol to implement inclusive or in a computer language.