| Subject | English | Bulgarian |
| transp., tech., law | high-intensity point light source | точков източник на светлина с висок интензитет |
| construct. | point sound source | точков източник на звук |
| environ. | point source Pollution from a discrete source, such as a septic tank, a sewer, a discharge type, a landfill, a factory or waste water treatment works discharging to a watercourse; stack emission from an industrial process; or spillage from an underground storage tank leaching into groundwater | точков източник |
| construct. | point source of air pollutants | точков източник на изхвърляния |
| construct. | point source of radiation | точков източник на излъчване |
| construct. | point-source radiator | точков излъчвател |