Definition of dot matrix
: a pattern of dots in a grid from which alphanumeric characters can be formed a dot matrix printer
First Known Use of dot matrix
DOT MATRIX Defined for English Language Learners
Definition of dot matrix for English Language Learners
: a pattern of dots that form letters, numbers, etc., on a computer screen or on something printed from a computer
Seen and Heard
What made you want to look up dot matrix? Please tell us where you read or heard it (including the quote, if possible).