[ (in-fruh-red) ]
Invisible radiation in the part of the electromagnetic spectrum characterized by wavelengths just longer than those of ordinary visible red light and shorter than those of microwaves or radio waves. (Compare ultraviolet radiation.)
Words nearby infrared radiation
notes for infrared radiation
The heat we feel from a glowing coal or an incandescent light bulb is from infrared rays.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.