Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
absentminded is an adjective meaning "lost in thought; showing preoccupation". It carries one recorded sense.
lost in thought; showing preoccupation
“an absent stare”
“an absentminded professor”
“the scatty glancing quality of a hyperactive but unfocused intelligence”
Definitions, synonyms and semantic relations for absentminded come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.