| Subject | English | Irish |
| environ. | baffle dust separator | sciathdheighilteoir deannaigh |
| environ. | bed droplet separator | deighilteoir braoiníní trí chiseal scagtha |
| environ. | centrifugal droplet separator | deighilteoir lártheifeach braoiníní |
| comp., MS | date separator | deighilteoir dáta (A character that is used to separate the day, month, and year when date values are formatted. The characters are determined by system settings or by the Format function) |
| IT | file separator | deighilteoir comhad |
| IT | file separator character | deighilteoir comhad |
| environ. | grease separator | gaiste gréisce |
| IT, el. | group separator | deighilteoir grúpaí |
| nucl.phys. | high-resolution electromagnetic separator | deighilteoir leictreamaighnéadach ardtaifigh |
| chem. | hydrogen separator | deighilteoir hidrigine |
| environ. | industrial dust separator | deighilteoir deannaigh tionsclaíoch |
| environ. | inertial dust separator | deighilteoir deannaigh támhúil |
| nucl.phys. | ion separator | iandeighilteoir |
| hobby, transp. | line separator | deighilteoir téad |
| comp., MS | list separator | deighilteoir liostaí (A character that separates items in a list) |
| comp., MS | list-separator character | carachtar deighilteora liosta (A character, usually a comma or semicolon, that separates elements in a list) |
| agric. | meat and bone separator | deighilteoir feola ó chnámh |
| environ. | particle separator A device for segregation of solid particles by size range, as a screening | deighilteoir cáithníní |
| environ. | profile droplet separator | stialldeighilteoir braoiníní |
| comp., MS | separator character | deighilteoir (A character you choose to indicate where you want text to separate when you convert a table to text, or where you want new rows or columns to begin when you convert text to a table) |
| environ. | separator of light liquids A mechanical device for separating and removing residues from fuel and lubricating oil from waste water coming from filling stations and industrial plants in order to avoid pollution of water bodies; this system is based on the different specific weights of water and fuel residues that float on the water and can be easily removed | deighilteoir leachtanna éadroma |
| transp., construct. | traffic separator | deighilteoir tráchta |