null set

1. 1.

   a set that is empty; a set with no members

   Broaderset

Questions about null set

What does null set mean?

null set means "a set that is empty; a set with no members".

Is null set a common word?

null set is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.