IPA: /ˈeɪdʒɪŋ/
KK: /ˈeɪdʒɪŋ/
The process of becoming older or the state of being old.
The ageing population presents new challenges for healthcare systems.
Ageing → It is formed from "age" (from Old French *age*, meaning a period of time or life) and "-ing" (a suffix used to form present participles or gerunds). The word "ageing" refers to the process of growing older or the passage of time in relation to life.
Think of the word 'age' as representing the passage of time, and remember that 'ageing' means the process of growing older.