Meaning of typing element

typ'ing el"ement

Pronunciation: [key]
  1. a spherelike device, usually of molded metal, having on its surface raised letters, numerals, and other characters. When actuated by a typewriter keyboard or computer command, the device revolves quickly, striking an inked ribbon and impressing the character on paper.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.