Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
attachable is an adjective meaning "capable of being fastened or added to something else". It carries one recorded sense.
capable of being fastened or added to something else
“a handle attachable by two bolts”
Definitions, synonyms and semantic relations for attachable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.