A sound that is reflected off a surface and heard again

A repeated sound or signal

पुनरावृत्ति

English Usage: The echo from the mountains was a thrilling experience.

Hindi Usage: पहाड़ों से आई प्रतिध्वनि एक रोमांचकारी अनुभव था।

The measurement of the space within a wave

The extent of a quality or phenomenon

गुणवत्ता या घटना का विस्तार

English Usage: The amplitude of the earthquake was recorded on the seismograph.

Hindi Usage: भूकंप का परिमाण सीस्मोग्राफ़ पर रिकॉर्ड किया गया।