responseheader
nounUK /rɪˈspɒns ˈhɛdə/
US /rɪˈspɑːns ˈhɛdər/
A response header is a small note that a computer sends back with an answer to tell you about it.
The response header said the page was found and was a web page.
OTHER MEANINGS
2. In computing, the part of a message that comes before the main content and carries extra information.
The response header listed the date and the type of file.
3. A line of text at the top of a reply that gives details about the reply.
She checked the response header to see who sent the message.
4. Information a server sends to a browser to describe how to handle the answer.
The response header told the browser to cache the image.