(1)   A room in a hospital equipped for the performance of surgical operations
"Great care is taken to keep the operating rooms aseptic"
(2)   A state in northwestern United States on the Pacific


  1. Connects at least two words, phrases, clauses, etc. that each could make a sentence true. In English, this is the "inclusive or." The "exclusive or" is "either...or".
  2. Logical union of two sets of values. There are two forms, an exclusive or and an inclusive or.

Etymology 2

via .


  1. The gold or yellow tincture on a coat of arms.
    • 1909: The metals are gold and silver, these being termed "or" and "argent". — Arthur Charles Fox-Davies, A Complete Guide to Heraldry
    • 1889: In engraving, "Or" is expressed by dots. — Charles Norton Elvin, A Dictionary of Heraldry

Alternative forms

Sometimes abbreviated as in heraldic contexts. Sometimes capitalized to distinguish use as a color from use as a conjunction.

Etymology 3

Late , from Scandinavian (compare Old Norse ). Compare .


  1. Early (on).
  2. Earlier, previously.


  1. Before; ere.
    • 1485, Sir Thomas Malory, Le Morte Darthur, Book VII:
      "Sey ye never so," seyde Sir Bors, "for many tymys or this she hath bene wroth with you, and aftir that she was the firste that repented hit."