infrared
(adjective) having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end; “infrared radiation”; “infrared photography”
infrared, infrared frequency
(noun) the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; “they could sense radiation in the infrared”
infrared, infrared light, infrared radiation, infrared emission
(noun) electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
Source: WordNet® 3.1
infrared (countable and uncountable, plural infrareds)
electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm
• electromagnetic radiation
infrared (not comparable)
Having the wavelength in the infrared.
In the infrared spectrum.
• mid-infrared
• near-infrared
Source: Wiktionary
In`fra-red", a. [Infra- + red.] (Physics)
Definition: Lying outside the visible spectrum at its red end; -- said of rays less refrangible than the extreme red rays.
Source: Webster’s Unabridged Dictionary 1913 Edition
24 February 2025
(noun) (astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun)
The Boston Tea Party helped popularize coffee in America. The hefty tea tax imposed on the colonies in 1773 resulted in America switching from tea to coffee. In the lead up to the Revolutionary War, it became patriotic to sip java instead of tea. The Civil War made the drink more pervasive. Coffee helped energize tired troops, and drinking it became an expression of freedom.
