OAS

1. abbreviationinitialismInitialism of oral allergy syndrome.
2. abbreviationinitialismInitialism of original antigenic sin.

1. abbreviationinitialismInitialism of Organization of American States.
2. CanadaabbreviationinitialismInitialism of Old Age Security.
3. abbreviationinitialismcomputingInitialism of OpenAPI Specification, a specification for machine-readable interface files for describing, producing, consuming, and visualizing RESTful Web services.
4. abbreviationinitialismInitialism of Organisation de l’Armée Secrète, a French organization.

   The first real meeting of the OAS was held in mid-May 1961. Its purpose was to sabotage de Gaulle’s efforts to remove French rule from Algeria.

   2001, Ben Abro et al., Assassination! July 14, University of Nebraska, page 193

1. A municipality of Albay, Philippines.

plural Oases

1. A surname from Norwegian.