OR

See also: Appendix:Variations of "or"

English

Conjunction

OR

2. (logic) Inclusive or; either one proposition or the other is true or both.
4. (computer science) A lexical symbol to implement inclusive or in a computer language.
6. (electrical engineering) A logic gate to implement inclusive or.

Noun

OR (uncountable)

1. (logic) The binary operator inclusive or, true if one at least one of two inputs is true. In infix notation.
   • 2022 August 4, William Bahn, “Boolean Algebra Laws—Delving Into Boolean Identities”, in All About Circuits‎^[1]:

     The proof (Tables 9 and 10) of idempotence for both OR and AND follows from examining the definition of each operation under the constraint that both inputs have the same value.

OR Truth Table

Input		Output
A	B
0	0	0
0	1	1
1	0	1
1	1	1

Synonyms

• ∨

Antonyms

• NOR

See also

• AND
• XOR
• NAND
• NOT

Noun

OR (countable and uncountable, plural ORs)

1. (healthcare, countable) Initialism of operating room.
   • 1998, Rushmore, 00:27:55

     Max Fischer: I like your nurse's uniform, guy. -- Dr. Peter Flynn: These are O.R. scrubs. -- Max Fischer: Oh, are they?

2. (Philippines, accounting, business, countable) Initialism of official receipt.
3. (sciences, uncountable) Initialism of operations research.
4. (sports, countable) Initialism of Olympic Record.

   Coordinate terms: OB, WR, CR, TR, NR, MR

5. (anatomy, countable) Initialism of odorant receptor.
6. (anatomy, countable) Initialism of olfactory receptor.
7. (chiefly Wikimedia jargon) Initialism of original research.
8. (military) Initialism of other ranks.

Translations

logic: (noun sense)

• Catalan: OR (ca) f
• Finnish: TAI
• Hungarian: VAGY
• Malay: ATAU
• Romanian: SAU, OR

Proper noun

OR

1. (postal) Abbreviation of Oregon: a state of the United States.
2. Abbreviation of Orissa, former name of Odisha: a state of India.

Anagrams

• r/o, Ro, R&O, RO