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 pacemaker responds to near-infrared light—wavelengths that can penetrate deeply into biological tissues. —Payal Dhar, Scientific American, 2 Apr. 2025

This detailed information primarily spans the visible spectrum and often extends into near-infrared and near-ultraviolet regions crucial for simulating how materials interact with light accurately. —ArsTechnica, 28 Mar. 2025

This uses a near-infrared light of 830nm wavelength, positioned over the person’s thumb. —Andrew Williams, Forbes, 25 Mar. 2025

Euclid Telescope Explores Deep Fields The Euclid telescope, launched in 2023, is equipped to create the largest 3D map of the universe to date by observing optical and near-infrared light. —Jack Knudson, Discover Magazine, 19 Mar. 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