noun
life annuity; lifetime pension
A financial product that provides regular payments for the rest of a person's life. Used in insurance and retirement contexts.
終身年金に加入すれば、生きている限り毎月一定額を受け取れます。
If you join a life annuity, you can receive a fixed amount every month as long as you live.
年金 is a general term for pension or annuity, while 終身年金 specifically means a lifetime annuity.
Compound of 終身 (lifetime) and 年金 (pension/annuity).