SUPERPOSITION
superposition
(noun) the placement of one thing on top of another
superposition
(noun) (geometry) the placement of one object ideally in the position of another one in order to show that the two coincide
superposition
(noun) (geology) the deposition of one geological stratum on another
Source: WordNet® 3.1
Etymology
Noun
superposition (countable and uncountable, plural superpositions)
The placing of one thing on top of another.
(geology) The deposition of one stratum over another; the principle that in a series of sedimentary strata, the lower strata are the older.
(physics) The situation in quantum mechanics where two or more quantum states are added together (superposed) to yield another valid quantum state.
Source: Wiktionary
Su`per*po*si"tion, n. Etym: [Cf. F. superposition. See Super-, and
Position.]
Definition: 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 Edition