Click-through rate, or CTR, is the share of people who see a result on a search engine results page and actually click it, clicks divided by impressions. It's the metric that separates "was this shown" from "did anyone care enough to visit," and it's the clearest read available on whether a title and description are actually doing their job.
CTR varies enormously by position even for the exact same query; the first organic result typically pulls a far larger share of clicks than the tenth, so comparing CTR across pages only makes sense alongside the position each one was ranking at. A page ranking well but pulling a CTR well below what its position would predict usually points to a title or meta description problem: something that isn't compelling, doesn't match what the searcher is actually looking for, or gets outcompeted by a more specific-looking result nearby. Google Search Console reports CTR per page and per query, which makes it possible to spot exactly where a title rewrite might be worth testing.
