We found one dictionary that defines the word publishing firms:

General (1 matching dictionary)

1. publishing firms: Vocabulary.com

(Note: See publishing_firm as well.)

Definitions from WordNet (publishing firm) ▸ noun:  a firm in the publishing business ▸ Also see publishing_firm ▸ Words similar to publishing firms ▸ Usage examples for publishing firms ▸ Idioms related to publishing firms ▸ Wikipedia articles (New!) ▸ Words that often appear near publishing firms ▸ Rhymes of publishing firms ▸ Invented words related to publishing firms