Machine Glazed (MG)
Paper holding a high-gloss finish only on one side.

Magenta
One of the four process colors.

Makeready
(1) All activities required to prepare a press or other machine to function for a specific printing or bindery job, as compared to production run. Also called setup. (2) Paper used in the makeready process at any stage in production. Makeready paper is part of waste or spoilage.

Manuscript (MS)
An author's original form of work (hand written, typed or on disk) submitted for publication.

Margin
Imprinted space around the edge of the printed material.

Mark-Up
Instructions written usually on a "dummy."

Matte Finish
Flat (not glossy) finish on photographic paper or coated printing paper.

Mechanical Bind
To bind using a comb, coil, ring binder, post or any other technique not requiring gluing, sewing or stitching.

Metallic Ink
Ink containing powdered metal or pigments that simulate metal.

Metallic Paper
Paper coated with a thin film of plastic or pigment whose color and gloss simulate metal.

Midtones
In a photograph or illustration, tones created by dots between 30 percent and 70 percent of coverage, as compared to highlights and shadows.

Mock Up
A reproduction of the original printed matter and possibly containing instructions or direction.

Modem
Mostly used over phone lines, a device that converts electronic stored information from point a. to point b.

Moire
Undesirable pattern resulting when halftones and screen tints are made with improperly aligned screens, or when a pattern in a photo, such as a plaid, interfaces with a halftone dot pattern.

Mottle
Spotty, uneven ink absorption. Also called sinkage. A mottled image may be called mealy.

Mull
A specific type of glue used for books binding and personal pads needing strength.