echolocation

As a letter s

is the letter s with a.

As a noun echolocation is

echolocation.

As nouns the difference between echolocation and ultrasound

is that echolocation is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar while ultrasound is sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.

As nouns the difference between echolocation and null

is that echolocation is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar while null is a non-existent or empty value or set of values.

As an adjective null is

having no validity, "null and void.

As a verb null is

to nullify; to annul.

As a noun echolocation

is echolocation.

As a proper noun rada is

an unincorporated community in west virginia or rada can be (rada).

As nouns the difference between echolocation and reverberations

is that echolocation is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar while reverberations is plural of lang=en.

As nouns the difference between echolocation and book

is that echolocation is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar while book is a collection of sheets of paper bound together to hinge at one edge, containing printed or written material, pictures, etc.

As a verb book is

to reserve (something) for future use.

As nouns the difference between echolocation and reverberation

is that echolocation is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar while reverberation is a violent oscillation or vibration.

As nouns the difference between echolocation and echolocation

is that echolocation is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar while echolocation is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar.

As a noun echolocation

is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar.

As an adjective ultrasonic is

beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher.

As nouns the difference between echolocation and radar

is that echolocation is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar while radar is a method of detecting distant objects and determining their position, velocity, or other characteristics by analysis of sent radio waves (usually microwaves) reflected from their surfaces.

As a verb radar is

to scan with radar, or as if with radar.

As an acronym RADAR is

abbreviation of {{l/en|radio|radio {{l/en|detection|detection}} {{l/en|and|and}} {{l/en|ranging|ranging}} |lang= en }.