We found one dictionary that defines the word subject fields:

General (1 matching dictionary)

1. subject fields: Vocabulary.com

(Note: See subject_field as well.)

Definitions from WordNet (subject field) ▸ noun:  a branch of knowledge ▸ Also see subject_field ▸ Words similar to subject fields ▸ Usage examples for subject fields ▸ Idioms related to subject fields ▸ Wikipedia articles (New!) ▸ Words that often appear near subject fields ▸ Rhymes of subject fields ▸ Invented words related to subject fields