suf ‧ fra ‧ gan /ˈsʌfrəɡən/ BrE AmE adjective [only before noun]
[ Date: 1300-1400 ; Language: Old French ; Origin: Medieval Latin suffraganeus , from suffragium 'support, prayer' ]
a suffragan ↑ bishop helps another bishop of higher rank in their work
—suffragan noun [countable]