All of the following search engines are meta-search engine with the exception of
None, apparently.
To determine which of the search engines listed is not a meta-search engine, we first need to understand what a meta-search engine is.
A meta-search engine is a search engine that retrieves search results from multiple other search engines and consolidates them into a single list. It essentially acts as an intermediary between the user and the underlying search engines, providing a more comprehensive set of results by combining the results from different sources.
Now, let's look at the list of search engines mentioned and determine which one is not a meta-search engine.
Please provide the list of search engines you are referring to.