| Subject | English | Estonian |
| comp., MS | A/R | MR (A group of posting accounts that show the amounts customers owe for services or sales made on credit) |
| environ., chem. | R-22 | klorodifluorometaan |
| patents. | R&D&I | teadus- ja arendustegevus ning innovatsioon |
| math. | R-estimator | R-hinnangufunktsioon |
| gen. | R&I Observatory | Euroopa teadusuuringute ja innovatsiooni vaatlussüsteem |
| chem. | R-phrases | R-laused |
| comp., MS | R-squared value | R-ruudu väärtus (A number from 0 to 1 that reveals how closely the estimated values for the trendline correspond to your actual data. A trendline is most reliable when its R-squared value is at or near 1) |
| math. | R-technique | R-tehnika |