Echolocation definitions

ĕk'ō-lō-kā'shən
A sensory system in certain animals, such as bats and dolphins, in which usually high-pitched sounds are emitted and their echoes interpreted to determine the direction and distance of objects.
noun
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A process for determining the location of objects by emitting sound waves and analyzing the waves reflected back to the sender by the object.
noun
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The determination, as by a bat, of the position of an object by the emission of sound waves which are reflected back to the sender as echoes.
noun
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Sonar, especially of animals, such as bats and toothed whales.
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The use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar.
noun
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Origin of echolocation

From echo +‎ location.