We found one dictionary that defines the word touching on/upon sth:

General (1 matching dictionary)

1. touching on/upon sth: Cambridge Advanced Learner's Dictionary

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