In`ter*ces"sion (?), n. [L. intercessio an intervention, a becoming surety: cf. F. 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.