Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
age-related is an adjective meaning "changing (increasing or decreasing) as an individual's age increases". It carries one recorded sense.
changing (increasing or decreasing) as an individual's age increases
Definitions, synonyms and semantic relations for age-related come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.