A meta redirect is another term for the meta refresh tag. Many people use the term meta redirect as shorthand.
A meta redirect is an HTML tag in the <head> of your HTML document that tells the browser that that web page has been moved and the browser should move to the new location as well.
How to Write a Meta Redirect
In the head of the document you would like moved, type:
<meta http-equiv="refresh" content="0;url=NEW PAGE URL" />
NEW PAGE URL with the URL of the page you want to end up on.
When to Use Meta Redirects
Use a meta redirect when you've got a page that you need to redirect quickly and for a short time. If you need to redirect a page permanently, you should use server-level 301 redirects instead.