Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
electrochemistry is a noun meaning "branch of chemistry that deals with the chemical action of electricity and the production of electricity by chemical reactions". It carries one recorded sense.
branch of chemistry that deals with the chemical action of electricity and the production of electricity by chemical reactions
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 electrochemistry come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.