subdean

sub- +‎ dean

subdean (plural subdeans)

1. An under dean; the deputy or substitute of a dean.
   • 1726, John Ayliffe, Parergon juris canonici Anglicani

     Whenever the dean and chapter confirm any act, that such confirmation may be valid, the dean must join in person, and not in the person of a deputy or sub-dean only.

• Debauns, unbased