Webster's Revised Unabridged Dictionary · 1913

Interposition

Interposition (?; 277) , noun

[Latin interpositio a putting between, insertion, from interponere, interpositum: compare French interposition. See Interpone, Position.]

1.
The act of interposing, or the state of being interposed; a being, placing, or coming between; mediation.
2.
The thing interposed.