| Subject | English | Thesaurus |
| abbr., mil., WMD | Inhalable Particulate Mass-Threshold Limit Values | IPM-TLVs |
| abbr., mil., WMD | Thoracic Particulate Mass-Threshold Limit Values | TPM-TLVs |
| biochem., abbr. | Threshold Limit Value | TLW |
| metrol. | threshold value | The smallest change in the input of a device, starting from the zero point, which causes a perceptible response in its output |