dark-field

[ dahrk-feeld ]
/ ˈdɑrkˌfild /

adjective Optics.

of or relating to the illumination of an object by which it is seen, through a microscope, as bright against a dark background.

Origin of dark-field

First recorded in 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019