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superposition | the placement of one thing on top of another | |
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superposition | [in geometry] the placement of one object ideally in the position of another one in order to show that the two coincide | |
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superposition | [in geology] the deposition of one geological stratum on another | |
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superposition, principle of superposition, superposition principle | [in geology] the principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest |