Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
elucidation is a noun meaning "an act of explaining that serves to clear up and cast light on". It carries 2 recorded senses.
an act of explaining that serves to clear up and cast light on
an interpretation that removes obstacles to understanding
“the professor's clarification helped her to understand the textbook”
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 elucidation come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.