Meaning of diffractometer

dif•frac•tom•e•ter

Pronunciation: (di-frak-tom'i-tur, dif"rak-), [key]
— n. Physics.
  1. an instrument that is used to study atomic crystal structure by measuring the angles at which x-rays, neutrons, or electrons are diffracted by matter.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.