Dot matrix and Matrix

Dot matrix noun - A rectangular matrix of dots from which written characters can be formed.

Matrix and dot matrix are semantically related. In some cases you can use "Matrix" instead a noun phrase "Dot matrix".

Matrix noun - An enclosure within which something originates or develops (from the Latin for womb).

Dot matrix and matrix are semantically related. Sometimes you can replace phrase "Dot matrix" with "Matrix", this terms are similar.