超ちょう高こう齢れい化かMeaningsNoun1. extreme population aging (ageing)Kanji used超exceed高high齢age化transformationComposed of超ちょうsuper-; ultra-; hyper-; extreme; over; more than; exceedingPrefix高こう齢れいadvanced age; old ageNoun化かchange to ...; becoming ...; making into ...; -ization; -ificationSuffix