A period of thirty seconds.

आधा मिनट

English Usage: "The meeting lasted just a half-minute."

Hindi Usage: "बैठक केवल आधा मिनट चली।"

Half of a minute; referring to short time.

आधे मिनट का

English Usage: "I need a half-minute break."

Hindi Usage: "मुझे आधे मिनट का ब्रेक चाहिए।"