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| English | Irish |
| acoustic filter A device employed to reject sound in a particular range of frequencies while passing sound in another range of frequencies | scagaire fuaime |
| anaerobic filter | scagaire anaeróbach |
| biological filter bed | ciseal scagtha bitheolaíoch |
| dust filter | scagaire deannaigh |
| filter cake Accumulated solids, wet or dry, generated by any filtration process, including accumulation on fabric filters in air filtering processes, or accumulation of wet solids in liquid filtering processes | dríodar scagacháin |
| filter run | timthriall scagaire |
| filtering tissue | fabraic scagach |
| green filter | scagaire glas |
| image filtering A remote sensing term related to image enhancement that refers to the removal of a spatial component of electromagnetic radiation | scagadh íomhánna |
| percolating filter | scagaire síothlaitheach |
| porous layer filter | scagaire cisil póiriúil |
| porous layer filter | scagaire balla póiriúil |
| porous wall filter | scagaire balla póiriúil |
| porous wall filter | scagaire cisil póiriúil |
| pressure filter | brúscagaire |
| reference filter | scagaire tagartha |
| trickling filter A system of secondary sewage treatment which is similar to self-purification action of streams; it is more accurately a biological oxidizing bed; the effluent is placed on the stones in the bed and microorganisms present consume the solids as a food supply | scagaire silín |