dot-matrix printer

noun

computing a printer in which each character is produced as an array of dots by a printhead

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

dot-matrix printer in Science

dot-matrix printer

An impact printer that prints text and graphic images by hammering the ends of pins against an ink ribbon. This produces characters or images made up of a matrix, or pattern, of dots.