from
The Collaborative International Dictionary of English v.0.48
Concomitance \Con*com"i*tance\, Concomitancy \Con*com"i*tan*cy\,
n. [Cf. F. concomitance, fr. LL. concomitantia.]
1. The state of accompanying; accompaniment.
[1913 Webster]
The secondary action subsisteth not alone, but in
concomitancy with the other. --Sir T.
Browne.
[1913 Webster]
2. (R.C.Ch.) The doctrine of the existence of the entire body
of Christ in the eucharist, under each element, so that
the body and blood are both received by communicating in
one kind only.
[1913 Webster]