| Subject | English | Latvian |
| comp., MS | A/R | debitori (A group of posting accounts that show the amounts customers owe for services or sales made on credit) |
| earth.sc., life.sc. | M.O.R. | meteoroloģiskais optiskais tālums |
| comp., MS | R&B | Ritms un blūzs (One of the music genres that appears under Genre classification in Windows Media Player library. Based on ID3 standard tagging format for MP3 audio files. ID3v1 genre ID 14) |
| patents. | R&D&I | pētniecība, attīstība un inovācija |
| life.sc. | R-factor | R-plazmīda |
| life.sc. | R-factor plasmid | R-plazmīda |
| gen. | R&I Observatory | Eiropas Pētniecības un inovācijas observatorija |
| chem. | R-phrases | R-frāzes |
| life.sc. | R-plasmid | R-plazmīda |
| comp., MS | R-squared value | R kvadrātā vērtība (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) |