imager

noun
im·​ag·​er | \ˈi-mi-jər \
plural imagers

Definition of imager 

: one that produces an image: such as

a : any of various machines (such as a CT scanner or X-ray machine) used to produce diagnostic images of a living body … we believe that our state-of-the-art NMR imager is more sensitive than our state-of-the-art CT scanner in the evaluation of these diseases. Thus, to exclude suspected disease, NMR is the preferred modality.— William G. Bradley, Jr.

b : an instrument that combines the functions of detection and image production to generate graphic output of extremely high quality for scientific or technical study The payload includes a descent imager to characterize the landing site's geological context, a stereo imager for high-resolution mapping of the surroundings, a gas analyzer, and an environmental survey package.— Robert Burnham The imager can measure two- and three-dimensional beam-intensity distributions, and it can transfer data to a computer via a video frame grabber.Physics Today

First Known Use of imager

15th century, in the meaning defined above

History and Etymology for imager

Middle English ymageoure, ymager "one who makes images, sculptor," in part from imagen "to image entry 2" + -eoure, -er -er entry 2, in part borrowed from Middle French imagier, ymageur, derivatives of ymagier "to picture, imagine"

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The first known use of imager was in the 15th century

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