abbreviation for Hubbard Associationof Scientologists International: the company which operated all Scientology organizations over the world and was the general membership group of the Church from mid 1950s to mid 1960s. The Church of Scientology International has replaced HASI in the operation of orgs, and the International Association of Scientologists (IAS) is the current membership group. —Org Board and Livingness Approved 25.2.91