OASIS Stands For : Old Age Social And Income Security | Older Active Singles In Spirit | Older Adults Services and Intervention System | Opportunities And Strategies Involving Self | Opportunity For Achievement Support Involvement Success | Overseas Adoption Support And Information System | Organization to Assess Strategies for Ischemic Syndromes | Offering All Sisters Inspired Studies | Older Adult Student Information Services | Older Adults Seeking Information and Skills | Older Adults Seeking Information Skills | Open Academy Schooling And Instruction System | Operation Andrew Students Interceding For Students | Opportunities After School for Intellectual Success | Opportunity for Academic Success In School | Outreach Assisting Students In Schools | Older Adult Service Information System | On-line Aspergers Syndrome Information and Support | Organization for the Advancement of Structured Information Standards | Ovarian Awareness | Older Active Spiritually Inspired Singles | Offering Adult Support In Scouting | Oldham Athletic Supporters In The South