superposition > define

noun

• Geology) the deposition of one geological stratum on another. (
• Geology) the principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest.
  • synonyms: principle of superposition, superposition principle
• Geometry) the placement of one object ideally in the position of another one in order to show that the two coincide. (
• The placement of one thing on top of another. .