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noun, Astronomy.
a galaxy that radiates strongly in the infrared portion of the electromagnetic spectrum.


Read Also:

  • Infrared microscope

    infrared microscope n. A microscope equipped with infrared transmitting optics and capable of measuring the infrared absorption of minute samples with the aid of photoelectric cells.

  • Infrared photography

    noun 1. photography using film with an emulsion that is sensitive to infrared light, enabling it to be used in misty weather, in darkened interiors, or at night. It has applications in aerial surveys, the detection of forgeries, etc

  • Infrared radiation

    infrared radiation [(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.) Note: The heat we feel from a glowing coal or an incandescent light bulb is from infrared rays.

  • Infrared-star

    noun, Astronomy. 1. a star radiating strongly in the infrared portion of the electromagnetic spectrum.

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