We found one dictionary that defines the word printing units:

General (1 matching dictionary)

1. printing units: Vocabulary.com

(Note: See printing_unit as well.)

Definitions from WordNet (printing unit) ▸ noun:  a unit of measurement for printing ▸ Also see printing_unit ▸ Words similar to printing units ▸ Usage examples for printing units ▸ Idioms related to printing units ▸ Wikipedia articles (New!) ▸ Words that often appear near printing units ▸ Rhymes of printing units ▸ Invented words related to printing units