subdenomination
/ˌsʌbdɪˌnɒmɪˈneɪʃn/noun
1A division or subdivision of a denomination.
2Specifically. In Ireland: a subdivision of an estate, area, or townland. Compare denomination. Now historical.
Origin
Mid 17th century; earliest use found in Richard Delamain (d.?1644), mathematician. From sub- + denomination.