Eucharist (a sacrament and the central act of worship in many Christian churches, which was instituted at the Last Supper and in which bread and wine are consecrated and consumed in remembrance of Jesus's death; Communion)
Eucharistic or Eucharistical (adjective form of Eucharist)
Definitions are taken from:
The American Heritage® Dictionary of the English Language, Third Edition copyright © 1992 by Houghton Mifflin Company.
Electronic version licensed from InfoSoft International, Inc. All rights reserved.
Webster's Third New International Dictionary, Unabridged. Merriam-Webster, 2002.
http://unabridged.merriam-webster.com (30 Sep. 2006).
English-Word Information: Word Info about English Vocabulary (wordinfo.info).