sort by Rank | Alpha
| Possible Meanings | Rank |
| Open and Secure Integrated Solutions | **** |
| Online Asperger Syndrome Information and Support | **** |
| Ornaments and Specialty Ingredients Source | **** |
| Organization to Assess Strategies for Ischemic Syndromes | *** |
| Organisation for the Advancement of Structured Information Standards | *** |
| Organizations and Society in Information Systems | *** |
| Online Advancement of Student Information Skills | *** |
| Online Association for Social Industry Standards | *** |
| Online Abstract Submission and Invitation System | *** |
| Organization to Achieve Solutions in Substance | *** |
| Organisation to Assess Strategies for Ischemic Syndromes | *** |
| Open Accessible Space Information System | *** |
| Organic and Sustainable Industry Standards | *** |
| Outcomes and Assessment Information Set | *** |
| Operational and Administrative System for Import Support | *** |
| Occupational Aptitude Survey and Interest Schedule | *** |
| Online Analytical Statistical Information System | *** |
| Old Age Social and Income Security | *** |
| Ohio Association of Security Investigation Services | *** |
| Organic Airborne and Surface Influence Sweep | *** |
| OceAnic Seamounts an Integrated Study | *** |
| Office of Academic Support Instructional Services | *** |
| Orlando Area Student Intern Society | *** |
| Ocean Atmosphere Sea Ice Soil | *** |
| Organically Assured and Survivable Information Systems | *** |
| Older Adults Still in Service | *** |
| Open Architecture and Schools in Society | *** |
| Open Architecture Scientific Information System | *** |
| Ocean Acoustical Services and Instrumentation Systems | *** |
| Online Access to Student Information Services | *** |
| Ohio Area Society for the Impala SS | *** |
| Onboard Autonomous Science Investigation System | *** |
| Oregon Annual Social Indicators Survey | *** |
| Online Access to Student Information Systems | *** |
| Ocean Atmosphere Sea Ice Snowpack | *** |
| Online Application System for Integrated Services | *** |
| Optimising Access to SPOT Infrastructure for Science | *** |
| Online Associate in Science in Individual Studies | *** |
| Office of Arts and Sciences Information Services | *** |
| Office of Academic Support and Instructional Services | ** |
| Organization for the Advancement of Space Industrialization and Settlement | ** |
| Observational Arthritis Study in Seniors | ** |
| One-Action Stent Insertion Set | ** |
| One-Action Stent Insertion System | ** |
| Oral Aesthetic Subjective Impact Scale | ** |
| oral aesthetic subjective impact score | ** |
| Organization for the Advancement of Structural Information Standards | ** |
| Objective Alignment System in Schools | ** |
| Online Aerospace Supplier Information System | ** |
| Online Automated Services Information System | ** |
| Office for Academic Support and Institutional Services | ** |
| Office of Academic Support and Information Services | ** |
| Outcome Assessment and Information Set | ** |
| Of Aspects of Information Systems | ** |
| Organization of Associated Salespeople in the Southwest | ** |
| Open Architecture System Integration Strategy | ** |
| Old Age Social Income Security | ** |
| Orthopedic and Sports Injury Specialists | ** |
| Online Administrative Student Information System | ** |
| Organization of Adult Students for Interaction and Support | ** |
| Organization of Associated Students from the Indian Subcontinent | ** |
| Ocean Atmosphere Seafloor Integration Study | ** |
| Ocean Atmosphere Sensor Integration System | ** |
| Open Access Statistical Information Sites | ** |
| Online Automotive Service Information System | ** |
| Outreach to Asian Immigrant Students | ** |
| Online Activities for Standards in School | ** |
| Office of Accountability and School Instructional Support | ** |
| Organization for the Advancement of Structure Information Standards | ** |
| Older Adult Service Information System | ** |
| Ohio Association of Security and Investigative Services | ** |
| Optically Adaptive System for Imaging Spectroscopy | ** |
| Ohio Area Society of the Impala SS | ** |
| Outreach and Support in South | ** |
| Open Architecture Silicon Implementation Software | ** |
| Okaloosa AIDS Support Informational Services | ** |
| Operational and Supportability Information System | ** |
| Organic Agriculture Students Inspiring Sustainability | ** |
| Outreach Assisting Students in Schools | ** |
| Order and Shipment Information System | ** |
| Organization for Autism Spectrum Information Support | ** |
| Ohio Association of Security and Investigation Services | ** |
| Organization for the Advancement for Structured Information Standards | ** |
| Optical Automatic Smart Inspection System | ** |
| Online Analysis and Statistical Information System | ** |
| Organisation for the Advancement of Structured Information Systems | ** |
| Objects and Agents for Simulation and Information Systems | ** |
| Oldham Alcohol Substance Intervention Service | ** |
| Operational Activity Security Information System | ** |
| Oklahoma Associations Supporting International Studies | ** |
| Open Access Scholarly Information System | ** |
| Open and Active Specification of Information Systems | ** |
| Overweight and Seeking Infertility Support | ** |
| Older Adults Services and Information Systems | ** |
| Online Arts Services and Information System | ** |
| Open Architecture Systems Interconnection Solutions | ** |
| Optical Acoustic SATCOM Integrated Sensor | ** |
| Organization for the Advancement of Structures Information Standards | ** |
| Osseo Area Source of Information and Support | ** |
| Opportunity for Academic Success in School | ** |
| Organization of Arab Students in Stanford | ** |
| Organized Action by Students Invested in Society | ** |
| Orthopaedic Association of South Indian States | ** |
| Older Adults Sharing in Service | ** |
| Online Academic Student Information System | ** |
| Objective Assessment System for Individual Supports | ** |
| Optionetics Annual Super Investor Summit | ** |
| Older Adult Services and Intervention System | ** |
| Online Aix Service Information Station | ** |
| Optimal Architecture Sensor Interface System | ** |
| Orbit Analysis and SImulation Software | ** |
| Out Adolescents Staying in School | ** |
| Of Adult Students for Interaction and Support | ** |
| Older Alabamians System of Information and Services | ** |
| Ontario Asthma Surveillance Information System | ** |
| Open Architecture Systems Integration Solutions | ** |
| OWCP Automated System for Imaging Services | ** |
| Office of Advising Support Information and Services | ** |
| Oklahoma Automated Secure Information Sharing | ** |
| Online Asperger Syndrome Information Support | ** |
| Open Audio System Integration Solution | ** |
| Organizing Annotating and Serving Information to Students | ** |
| Observations at Several Interacting Scales | ** |
| Ocean Acquisition System for Interdisciplinary Science | ** |
| Office Administrative Services Integrated Systems | ** |
| Oklahoma Areawide Service Information System | ** |
| Oklahoma Association Serving Impacted Schools | ** |
| Online Appraisal Strategic Information System | ** |
| Online Auburn Student Information System | ** |
| Outstanding Achievement in School Information Services | ** |
| Oxfordshire Autistic Society for Information and Support | ** |
| Occurrence Analysis and Safety Information System | ** |
| Of A School Information System | ** |
| Office Automation and School Information System | ** |
| Older Adults Service and Information System | ** |
| Open Architecture for Simulation Systems | ** |
| Organization for the Advancement of Structured Information Statndards | ** |
| Organization of Associated Students of the Indian Subcontinent | ** |
| Oceanic and Atmospheric Scientific Information System | * |
| Office Automation Services and Information Systems | * |
| Office of Academic Services and Instructional Support | * |
| Oldham Athletic Supporters in the South | * |
| Online Automated Student Information System | * |
| Open Audio Source Information System | * |
| Older Adults Sharing Important Skills | * |
| On Old Age Social and Income Security | * |
| Open Application Services Interface System | * |
| Optimization of Aquifer Storage for Increased Supply | * |
| Ohio Academy for School Improvement Strategies | * |
| Once Again Students in School | * |
| Ontario Association for Science in Society | * |
| Open Access Series of Imaging Studies | * |
| Opportunities and Supportive Instructional Services | * |
| Organically Assured Survivable Information Systems | * |
| Outreach and Admissions Student Input System | * |
| Office of Academic Services and Intern Support | * |
| Operational Activities Special Information Systems | * |
| Organisation Against Sexism in Software | * |
| Organisation for the Advancement of Structure Information Standards | * |
| Organization of Adult Students Informal and Supportive | * |
| Offering Acceptance Support and Inclusion to Students | * |
| Office of Accountability School Instructional Support | * |
| Old Age and Survivors Insurance | * |
| Older Adults Seeking Information and Skills | * |
| Oneonta Area Sharing in Schooling | * |
| Open Analogue Signal Information System | * |
| Operational Analysis and Simulation of Integrated Systems | * |
| Opportunities for Academic Success in Studies | * |
| Organic Air and Surface Influence Sweep | * |
| Organisation of Aware Saviours in Society | * |
| Organization of Associated Sovereign Independent States | * |
| Outstanding Adults Still in Service | * |
| Overseas Adoption Support Information Service | * |
| Online Access and Service Information System | * |
| Organisation for Article Standards In Science | * |
| Optics and Acceleration Systems Integrated Studies | * |
| Operational Analyses Strategic Interaction Simulator | * |
| Office Automation Services Informatics Sector | * |
| Office Automation Sys Integ Srvc | * |
| Old Age and autonomy: the role of Service systems and Intergenerational Solidarity | * |
| Oman Air Safety Information System (Aviation) | * |
| Omnicare Advanced Strategic Information System | * |
| Operation Analysis and Simulation Interface System | * |
| Operational Applications of Special Intelligence Systems | * |
| ownership and accountability of selected secondary items stocked | * |