in·ter·ces·sion 
(ĭn′tər-sĕshən)
(ĭn′tər-sĕshən)n.
1. Entreaty in favor of another, especially a prayer or petition to God in behalf of another.
2. Mediation in a dispute.
[Middle English, from Old French, from Latin intercessiō, intercessiōn-, intervention, from intercessus, past participle of intercēdere, to intervene; see INTERCEDE.]
in′ter·cession·al adj.