In the Wikipedia glossary, an orphan is defined as "an article with no links from other pages in the main article namespace". These pages can still be found by searching Wikipedia, but it is preferable that they can also be reachable by links from related pages; it is therefore helpful to add links from other suitable pages with similar or related information. De-orphaning articles is an important aspect of building the web.
More colloquially, editors also sometimes use "orphan" to refer to pages that do not have as many incoming links as they ought to, even if they do not meet the technical definition for orphan status.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).