outer boundary

1. 1.

   the outside boundary or surface of something

   Synonymsperipheryfringe

   Broaderboundary

Questions about outer boundary

What does outer boundary mean?

outer boundary means "the outside boundary or surface of something".

What is another word for outer boundary?

Close synonyms include periphery, fringe. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is outer boundary a common word?

outer boundary is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.