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Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
superposition is a noun meaning "(geology) the deposition of one geological stratum on another". It carries 4 recorded senses.
(geology) the principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest
geology
(geometry) the placement of one object ideally in the position of another one in order to show that the two coincide
geometry
the placement of one thing on top of another
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for superposition come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.