responder

American  

[ri-spon-der] / rɪˈspɒn dər /

noun

1. a person or thing that responds.

2. Electronics. the part of a transponder that transmits the reply.

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Etymology

Origin of responder

First recorded in 1875–80; respond + -er ¹

Example Sentences

New York emergency responders arrive on the scene.

From The Wall Street Journal

"I am grateful to our first responders, whose swift actions saved lives," he said.

From BBC

Another 13 people, including 11 passengers and two first responders, were taken to the hospital with injuries, according to broadcaster ABC.

From Barron's

The incident occurred at the downtown Los Angeles restaurant Zaya, according to ABC7, which captured helicopter footage of first responders at the scene.

From Los Angeles Times

The United States Coast Guard, working alongside Navy and local responders, rescued seven people and a dog trapped by rising waters — one of many scenes that highlighted how quickly conditions spiraled.

From Salon