middle-tone

halftone

[haf-tohn, hahf-]
noun
1.
Also called middle-tone. (in painting, drawing, graphics, photography, etc.) a value intermediate between light and dark.
2.
Printing.
a.
a process in which gradation of tone in an image is conveyed by first photographing the image through a screen to break up the continuous tones of the image into minute, closely spaced dots, then using the print obtained to produce a metal plate by photoengraving, and finally using the plate to reproduce the original image by letterpress or offset printing.
b.
the metal plate used in such a process.
c.
the print obtained in such a process. Compare line cut.
adjective
3.
pertaining to, using, used in, or produced by the halftone process: a halftone screen; a halftone print.

Origin:
1645–55; half + tone

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
halftone (ˈhɑːfˌtəʊn)
 
n
1.  a.  a process used to reproduce an illustration by photographing it through a fine screen to break it up into dots
 b.  the etched plate thus obtained
 c.  the print obtained from such a plate
2.  art a tonal value midway between highlight and dark shading
3.  (US), (Canadian) music another word for semitone
 
adj
4.  relating to, used in, or made by halftone

Collins English Dictionary - Complete & Unabridged 10th Edition
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