| Subject | English | Lithuanian |
| nucl.phys. | boiling water reactor | verdančio vandens reaktorius |
| econ. | breeder reactor | dauginimo reaktorius |
| IT | controlled reactor | reguliuojamas droselis |
| environ. | fast reactor Nuclear reactor which produces more fissile material than it consumes, using fast-moving neutrons and making plutonium-239 from uranium-238, thereby increasing the reactor's efficiency | spartusis reaktorius |
| chem. | fixed-bed reactor | nejudamo katalizinio sluoksnio reaktorius |
| obs., chem. | fixed-bed reactor | reaktorius su nejudamuoju sluoksniu |
| R&D., nucl.phys., nucl.pow. | HFR reactor | stipriasrautis reaktorius |
| R&D., nucl.phys., nucl.pow. | high-flux reactor | stipriasrautis reaktorius |
| R&D., nucl.phys. | international thermonuclear experimental reactor | tarptautinis termobranduolinis eksperimentinis reaktorius |
| R&D., nucl.phys. | international thermonuclear experimental reactor | ITER |
| nucl.phys., nucl.pow. | light water reactor | lengvojo vandens reaktorius |
| nucl.phys., nucl.pow. | light-water moderated reactor | lengvojo vandens reaktorius |
| gen. | low-flux reactor | silpniasrautis |
| environ. | nuclear reactor Device which creates heat and energy by starting and controlling atomic fission | atominis reaktorius |
| econ. | nuclear reactor | branduolinis reaktorius |
| nucl.phys., nucl.pow. | pebble bed reactor | rutulinių šiluminių elementų reaktorius |
| econ. | reactor cooling system | reaktoriaus aušinimo sistema |
| energ.ind., nucl.phys. | reactor pressure vessel | reaktoriaus slėginis korpusas |
| energ.ind., nucl.phys. | reactor pressure vessel | reaktoriaus slėginis indas |
| environ. | reactor safety Those studies and activities that seek to minimise the risk of a nuclear reactor accident | reaktoriaus sauga |
| nucl.phys. | research reactor | tyrimų reaktorius |
| IT | saturable core reactor | soties droselis |
| IT | saturable core reactor | prisotinimo droselis |
| health., anim.husb. | singleton reactor | pavienis židinys |
| IT | smoothing reactor | filtravimo droselis |
| nucl.phys. | Tehran Research Reactor | Teherano mokslinių tyrimų reaktorius |
| chem. | trickle-bed reactor | pratekamo katalizinio sluoksnio reaktorius |
| obs., chem. | trickle-bed reactor | reaktorius su lašinamuoju sluoksniu |
| IT | variable reactor | reguliuojamas droselis |