special session

1. 1.

   a session that is held in addition to the regular sessions

   Broadersession

Questions about special session

What does special session mean?

special session means "a session that is held in addition to the regular sessions".

Is special session a common word?

special session 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.