echolocation

The sonar-like system used by dolphins, bats, and other animals to detect and locate objects by emitting usually high-pitched sounds that reflect off the object and return to the animal's ears or other sensory receptors.

Citation: 
Adapted from "echolocation." Dictionary.com Unabridged. Random House, Inc. 24 Nov. 2015. <Dictionary.com http://dictionary.reference.com/browse/echolocation>.
English

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