hit Refers to a hit or a server transaction - not really used any more since the concept of page impressions came about. One page impression could generate many hits.
hub - a trusted page with high quality content that links out to related pages.
HTML (Hyper Text Markup Language) directives or “markup” which are used to add formatting and web functionality to plain text for use on the internet. HTML is the mother tongue of the search engines, and should generally be strictly and exclusively adhered to on web pages.
impression (page view) The event where a user views a webpage one time.
in-bound link (or incoming link) In-bound links from related pages are the source of trust and pagerank.
indexed Pages -These are the pages on a website which have been indexed by a search engine. Google webmaster tools are a useful way of keeping track of this