intercession
n.
early 15c., "act of interceding," from Latin intercessionem (nominative intercessio) "a going between," noun of action from past participle stem of intercedere (see intercede). The modern sense was not in classical Latin.
〔蒋〕[inter-中间，…之中，cess行，-ion名词后缀；“介入其中”] 居间调停，调解，说情