Webster's Revised Unabridged Dictionary · 1913

Intercession

Intercession , noun

[Latin intercessio an intervention, a becoming surety: compare French intercession. See Intercede.]

The act of interceding; mediation; interposition between parties at variance, with a view to reconcilation; prayer, petition, or entreaty in favor of, or (less often) against, another or others.
But the Spirit itself maketh intercession for us with groanings which can not be uttered. — Rom. viii. 26