| Subject | English | Icelandic |
| math. | asymptotically efficient estimator | asymptotically duglegur metilsins |
| math. | blocked adaptive computationally-efficient outliers nominators | BACON reiknirit |
| math. | efficient estimator | duglegur estimator |
| comp., MS | Efficient File Storage | skilvirk skráageymsla (A storage method in which a file is split into pieces that are stored and updated separately, and streamed together when a user requests the file) |
| math. | most efficient estimator | skilvirkasta metilsins |