infrared
ELECTROMAGNETIC RADIATION WITH LONGER WAVELENGTHS THAN THOSE OF VISIBLE LIGHT
Infra-red radiation; Infra-red; Infrared radiation; Near-infrared; Infrared Radiation; Infrared light; Near infrared; Infra-red light; Near Infrared; 1550 nm; LWIR; MWIR; Infra red; Infared; 1300 nm; Infrared spectrum; Infra Red; Infra-Red; InfraRed; Infrared sources; Long-wave infrared; Line of light; Infrared communication; Calorific rays; Calorific Rays; Mid-infrared; Infrared rays; Thermal infrared; Infra-red reflectography; Infrared reflectography; Infrared Rays; Infrared Ray; IR-A; IR-B; IR-C; IR radiation; NIR Photons; MIR photons; Short-wavelength infrared; Infrared bands; Short-wave infrared; Mid-wave infrared; Near-infrared light; Mid infrared; 830 nm; 850 nm; Thermal infrared radiation; Applications of infrared radiation; History of infrared science; Infrared source
also infra-red
1.
Infrared radiation is similar to light but has a longer wavelength, so we cannot see it without special equipment.
ADJ: ADJ n
2.
Infrared equipment detects infrared radiation.
...searching with infra-red scanners for weapons and artillery.
ADJ: ADJ n