| IF | idiopathic fibroplasia; idiopathic flushing; immersion foot; immunofluorescence; indirect fluorescen... |
|---|---|
| IFR | infrared; inspiratory flow rate |
| ILS | idiopathic leucine sensitivity; idiopathic lymphadenopathy syndrome; increase in life span; infrared... |
| IR | drop of voltage across a resistor produced by a current; ileal resection; immune response; immunizat... |
| IRED | infrared light-emitting diode |
| ATR-FTIR | Attenuated Total Reflectance Fourier-Transform Infrared |
|---|---|
| ATR-FTIR | Attenuated total reflection Fourier transform infrared |
| FTIRM | Fourier Transform Infrared Microspectroscopy |
| IRMPD | Infrared multiphoton dissociation |
| NIRS | Near infrared spectrophotometry |
| infrared radiation | Electromagnetic radiation with wavelengths between 750 nanometres and 1,000,000 nanometres (or 1 millimetre). This is more commonly known as heat energy. (09 Oct 1997) |
|---|---|
| infrared ray | See: infrared. (05 Mar 2000) |
| infrared rays | That portion of the electromagnetic spectrum usually sensed as heat. Infrared wavelengths are longer than those of visible light, extending into the microwave frequencies. They are used therapeutically as heat, and also to warm food in restaurants. (12 Dec 1998) |
| infrared spectrum | The part of the invisible spectrum of wave length just longer than that of visible red light. Synonym: thermal spectrum. (05 Mar 2000) |