Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
re-formation is a noun meaning "forming again (especially with improvements or removal of defects); renewing and reconstituting". It carries one recorded sense.
forming again (especially with improvements or removal of defects); renewing and reconstituting
Definitions, synonyms and semantic relations for re-formation come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.