We found one dictionary that defines the word outer boundaries:

General (1 matching dictionary)

1. outer boundaries: Vocabulary.com

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