graser — (physics, science fiction) A device for the coherent amplification or generation of electromagnetic radiation in the gamma ray wavelength by the use of excitation energy in resonant atomic or molecular systems.
grazer — to touch or rub something lightly, or so as to produce slight abrasion, in passing: to graze against a rough wall.
kayser — A unit of wavenumber in the CGS system of units, equivalent to the number of waves in one centimeter.
laser — a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms to a higher energy level and causing them to radiate their energy in phase.
lazar — a person infected with a disease, especially leprosy.
maser — a device for amplifying electromagnetic waves by stimulated emission of radiation.
mazer — a large metal drinking bowl or cup, formerly of wood.
raiser — to move to a higher position; lift up; elevate: to raise one's hand; sleepy birds raising their heads and looking about.