near-infrared

adjective

near-in·​fra·​red ˌnir-ˌin-frə-ˈred 

-(ˌ)frä-

: of or relating to the shorter wavelengths of radiation in the infrared spectrum and especially to those between 0.7 and 2.5 micrometers

Examples of near-infrared in a Sentence

Recent Examples on the Web

The aim of the telescopes was to provide continuous coverage of the sky from both the Northern and Southern hemispheres, using identical telescopes with adaptive optics and the capability to conduct near-infrared wide-field surveys. —Keith Cooper, Space.com, 26 Nov. 2025

This red light therapy mask uses two wavelengths of light: Red 633nm and near-infrared 830nm. —Conçetta Ciarlo, Vogue, 25 Nov. 2025

There's just one mode but three wavelengths: (red) 633, (near-infrared) 830, and (deep near-infrared) 1072 nanometers. —Boutayna Chokrane, Wired News, 21 Nov. 2025

The mask works by emitting red and near-infrared light, which penetrates deeply into the skin to stimulate collagen production and improve texture. —Sandra Rose Salathe, Flow Space, 19 Nov. 2025

Word History

First Known Use

1950, in the meaning defined above

Rhymes for near-infrared

• abed
• ahead
• beachhead
• bedspread
• bedstead
• behead
• blackhead
• blockhead
• bloodshed
• bowhead
• breastfed
• bridgehead