We found one dictionary that defines the word mention in passing:

Miscellaneous (1 matching dictionary)

1. mention in passing: Idioms

▸ Words similar to mention in passing ▸ Usage examples for mention in passing ▸ Idioms related to mention in passing ▸ Wikipedia articles (New!) ▸ Words that often appear near mention in passing ▸ Rhymes of mention in passing ▸ Invented words related to mention in passing