hydrate

 hydrate  is web developer jargon for the process of client-side JS taking over a DOM that was generated on the server, adding it to JS data structures, adding event handlers, … instead of generating page elements only on the client or entirely replacing those sent by the server. Due to complexity typically a process integrated with larger frameworks (example: vue.js documentation) that use the same code to render on the server and on the client.

Indieweb Examples

 * uses it for https://jolvera.dev
 * https://chat.indieweb.org/2019-06-12#t1560346497762100
 * "jamietanna[m]: first render is from the server, then it hydrates the markup with React and add all the goodies. And for navigation https://github.com/zeit/next.js/#prefetching-pages" [ @jolvera] June 12, 2019