Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
well-formed is an adjective meaning "conforming to the rules of grammar or usage accepted by native speakers". It carries one recorded sense.
conforming to the rules of grammar or usage accepted by native speakers
“spoke in grammatical sentences”
Definitions, synonyms and semantic relations for well-formed come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.