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Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
catalysis is a noun meaning "acceleration of a chemical reaction induced the presence of material that is chemically unchanged at the end of the reaction". It carries one recorded sense.
acceleration of a chemical reaction induced the presence of material that is chemically unchanged at the end of the reaction
“of the top 50 commodity chemicals, 30 are created directly by catalysis and another 6 are made from raw materials that are catalytically produced”
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 catalysis come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.