sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| IBM Software Support Toolbar | **** |
| IBM Software Services for Tivoli | **** |
| Information System for Science and Technology | **** |
| Institute for Software and Systems | **** |
| International Society for the Study of Trauma | **** |
| Internet Sex Screening Test | *** |
| Italian Syntactic Semantic Treebank | *** |
| Information Systems Security Team | *** |
| International Society for Sandplay Therapy | *** |
| Interdisciplinary Study of Time | *** |
| Identity Security Strike Teams | *** |
| Invasive Species Strike Team | *** |
| Information Seeking Skills Test | *** |
| International Society for the Study of Time | *** |
| Institute for Sustainable Systems and Technologies | ** |
| International Standard Serial Title | ** |
| Information Science Systems Technology | ** |
| Information Systems and Software | ** |
| In School Support Teacher | ** |
| Institute of Surface Science and Technology | ** |
| International Symposium on the Science of Touch | ** |
| Information Science Systems and Technology | ** |
| Instructional Support Services Teams | ** |
| International Symposium on Space Tourism | ** |
| Internet Systems Software Technology | ** |
| Interactive Shot Selection Tool | ** |
| International Symposium on Space Travel | ** |
| Independent Schools Superannuation Trust | * |
| Integrated Social Skills Training | * |
| International Schools Sports Tournaments | * |
| Information Services Security Team | * |
| Information Systems Support Team | * |
| Inside Sales Skills Training | * |
| Institute for Social Studies Trust | * |
| Institute for Software and System Technology | * |
| International Symposium on Software Technology | * |
| ISAF Security Support Teams | * |
| Illawarra Skills Shortages Taskforce | * |
| Instrument Suite Science Team | * |
| international scholastic sports tournament | * |
| International Ski Sun Team | * |
| International Society of Skilled Trades | * |
| Illawarra Skills Shortage Taskforce | * |
| Initial Site Screening Team | * |
| Iowa State Science and Technology | * |
| IPT and In Service Support Team | * |