Echo

A reflected sound that is heard again by its initial observer.

An utterance repeating what has just been said.

A device in verse in which a line ends with a word which recalls the sound of the last word of the preceding line.

Sympathetic recognition; response; answer.

(of a sound or sound waves) To reflect off a surface and return.

To reflect back (a sound).

(by extension) To repeat (another's speech, opinion etc.).

"Sid echoed his father's point of view."

To repeat its input as input to some other device or system.

The visual image formed by an echocardiograph.

The use of ultrasound to produce images of the heart.