少しょう子し高こう齢れい化かMeaningsNoun1. declining birth rate and aging populationKanji used少few子child高high齢age化transformationComposed of少しょう子しsmall number of children (per family); bearing few children; youngest child (in the family)Noun高こう齢れいadvanced age; old ageNoun化かchange to ...; becoming ...; making into ...; -ization; -ificationSuffix