stercoranist

from The Century Dictionary.

• noun A name applied by opponents to various persons in the church who were said to hold a grossly materialistic conception of the Lord's Supper.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Eccl. Hist.) A nickname formerly given to those who held, or were alleged to hold, that the consecrated elements in the eucharist undergo the process of digestion in the body of the recipient.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun historical, derogatory One who holds that the consecrated elements in the Eucharist undergo the process of digestion in the body of the recipient.