We found one dictionary that defines the word reading up on/about sth:

General (1 matching dictionary)

1. reading up on/about sth: Cambridge Advanced Learner's Dictionary

▸ Words similar to reading up on/about sth ▸ Usage examples for reading up on/about sth ▸ Idioms related to reading up on/about sth ▸ Wikipedia articles (New!) ▸ Words that often appear near reading up on/about sth ▸ Rhymes of reading up on/about sth ▸ Invented words related to reading up on/about sth