Main Entry:

¹la·ser

Pronunciation:

\ˈlā-zər\

Function:

noun

Usage:

often attributive

Etymology:

light amplification by stimulated emission of radiation

Date:

1957

1 : a device that utilizes the natural oscillations of atoms or molecules between energy levels for generating a beam of coherent electromagnetic radiation usually in the ultraviolet, visible, or infrared regions of the spectrum 2 : something resembling a laser beam in accuracy, speed, or intensity <threw a laser into the end zone> <a laser stare>