plenary
Concise Oxford English Dictionary © 2008 Oxford University Press:
plenary /ˈpliːnəri/
▶adjective
- 1 unqualified; absolute.
- 2 (of a meeting) to be attended by all participants at a conference or assembly.
– origin ME: from late L. plenarius ‘complete’, from plenus ‘full’.
'plenary' also found in these Oxford entries:

