Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
extensible is an adjective meaning "capable of being protruded or stretched or opened out". It carries one recorded sense.
capable of being protruded or stretched or opened out
“an extensile tongue”
“an extensible measuring rule”
Definitions, synonyms and semantic relations for extensible come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.