early 15c., "a yearly allowance, grant payable in annual installments," from Anglo-French and Old French annuité (14c.) or directly from Medieval Latin annuitatem (nominative annuitas), from Latin annus "year" (see annual (adj.)). Meaning "an investment that entitles one to equal annual payments" is from 1690s.
1. Investors should consider putting some money into an annuity.
2. Alexander receives a small annuity.
3. My pension has plummeted and now I have to buy an annuity.
4. One that receives or is qualified to receive an annuity.
5. He have a government annuity or an annuity from the government.