Superposition
Pronunciation : Su`per*po*si"tion
Part of Speech : n.
Etymology : [Cf. F. superposition. See Super-, and Position.]
Definition : Defn: The act of superposing, or the state of being superposed; as, the superposition of rocks; the superposition of one plane figure on another, in geometry.
Source : Webster's Unabridged Dictionary, 1913