interfātĭo, ōnis, f. [interfor],
a speaking between , an interrupting in speaking (syn. interpellatio): contra verba atque interfationem, Cic. Sest. 37, 79: expositiones brevi interfatione distinguere, Quint. 4, 2, 50 Spald. N. cr.
interfātiō ōnis, f interfor, a speaking between, interruption . ...
An Elementary Latin Dictionary