Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
infrared | Yes | Yes | No | No |
invisible | No | Yes | No | No |
infrared (noun) | invisible (noun) |
---|---|
the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range | |
electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves |
infrared (adjective) | invisible (adjective) |
---|---|
having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end | impossible or nearly impossible to see; imperceptible by the eye |
not prominent or readily noticeable |