intinction
Concise Oxford English Dictionary © 2008 Oxford University Press:
intinction /ɪnˈtɪŋ(k)ʃ(ə)n/
▶noun the action of dipping the bread in the wine at a Eucharist so that a communicant receives both together.
– origin C16: from late L. intinctio(n-), from L. intingere, from in- ‘into’ + tingere ‘dip’.
'intinction' also found in these Oxford entries:

