| Acronym | Definition |
|---|
| ISEI➣International Society on Early Intervention |
| ISEI➣International Symposium on Electrical Insulation (IEEE) |
| ISEI➣International Society for Ecological Informatics (Adelaide University; Australia) |
| ISEI➣International Society for Educational Information (Japan) |
| ISEI➣Integrated Science Education Initiative (St. Lawrence University; New York) |
| ISEI➣Institute for Systems Engineering and Informatics (Ispra, Italy) |