\Con*com"i*tance\, Concomitancy \Con*com"i*tan*cy\,
n. [Cf. F. concomitance, fr. LL. concomitantia.]
1. The state of accompanying; accompaniment.
         The secondary action subsisteth not alone, but in
         concomitancy with the other.          --Sir T.
                                               Browne.
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.