Glossary Of Terms

The SGIA Glossary of Terms serves as an excellent industry terminology resource. It is the language by which we all communicate, without it universal understanding would be impossible. Language and our ideas about how it is interpreted change rapidly. SGIA is aware of this and continues its effort to keep our constituents well informed about changes to the increasingly complex industry terminology. The definitions are for general reference only. Usage may vary between companies, individuals, or national and country customs. The information presented is as accurate as the authors and editors can ascertain and SGIA assumes no responsibility for the use of information presented herein.


  • Multicolor press
    A screen printing machine capable of applying more than one color on the substrate at one pass through the printing sequence.
  • Multifilament (multifil)
    A screen mesh that is woven from twisted multi-strands of thread.
  • Multilayered printed circuit
    A unit that consists of a number of thin copper-clad laminates bonded with a suitable insulating adhesive with provision made for interconnection between the layers; a circuit where two or more layers are bonded together, one on top of the other, with heat and pressure.
  • Munsell Color System
    A method to classify surface color in a solid where the vertical dimension is called value, the circumferential dimension hue, and the radial dimension chroma.
  • Murray-Davis equation
    A relationship used to calculate the relative apparent dot area in a halftone tint by comparing the light absorbing power of the tint to that of a solid.
  • Mutagen
    A chemical or physical effect that can alter genetic material in an organism and can result in physical or functional changes in all subsequent generations.
  • Mylar
    Trademark of the DuPont Corporation for polyethylene terephtalate (polyester) film.
  • Mystery turntable
    A display turntable that is turned by a motor and has the capability of unpredictable, constantly changing rhythm.