superposition
n. மேற்கிடை, மேல்வைப்புநிலை.
Su`per*po*si"tion, n. Etym: [Cf. F. superposition. See Super-, and Position.] 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.