Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
frequence is a noun meaning "the number of occurrences within a given time period". It carries one recorded sense.
the number of occurrences within a given time period
“the frequency of modulation was 40 cycles per second”
“the frequency of his seizures increased as he grew older”
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 frequence come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.