| Subject | English | Latvian |
| law, chem. | effective concentration x% | efektīvā koncentrācija x% |
| chem. | effective dose x% | efektīvā deva x% |
| health. | Fra-X syndrome | fragīlā X sindroms |
| health. | Fra-X syndrome | Mārtina un Bellas sindroms |
| health. | fragile x chromosome syndrome | Mārtina un Bellas sindroms |
| health. | fragile x chromosome syndrome | fragīlā X sindroms |
| health. | fragile X syndrome | Mārtina un Bellas sindroms |
| health. | fragile X syndrome | fragīlā X sindroms |
| comp., MS | IEEE 802.1X security standard | drošības standarts IEEE 802.1X (An Institute of Electrical and Electronics Engineers (IEEE) standard that defines port-based network access control which either allows or denies connection requests to IEEE 802.3 wired Ethernet networks or IEEE 802.11 wireless networks) |
| life.sc. | inverted X-chromosome | invertēta X-hromosoma |
| chem. | lethal concentration x% | letālā koncentrācija x% |
| chem. | lethal dose x% | letālā deva x% |
| health., med. | triple X syndrome | trisomija |
| health., med. | trisomy X | trisomija |
| comp., MS | x64-based | x64 bitu (Pertaining to the combination of a 64-bit Windows operating system and microprocessors that natively support the x86 for extended systems (x64) 64-bit instruction set. Examples include AMD Opteron and Intel Xeon with 64-bit extension technology processors) |
| comp., MS | x86-based | x86 bitu (Pertaining to the combination of a 32-bit Windows operating system and a microprocessor that natively supports the 32-bit x86 instruction set. Examples include Intel Pentium 4, AMD Athlon and VIA C7 processors) |
| environ. | X ray A penetrating electromagnetic radiation, usually generated by accelerating electrons to high velocity and suddenly stopping them by collision with a solid body, or by inner-shell transitions of atoms with atomic number greater than 10; their wavelength ranges from about 10(-5) angstrom to 10 angstroms, the average wavelength used in research being 1 angstrom | rentgena stari |
| comp., MS | x-report | X pārskats (A type of report that is generated to record current sales totals for a specific cash register) |
