Dictionary | Oxford English

: Every entry provides an etymology (history) of the word and tracks its earliest known usage.

: Work began in 1857, driven by the Philological Society of London to create a more comprehensive record than any existing dictionary. 2. The "Historical Principles" Methodology

The Living Record: How the Oxford English Dictionary Tracks Language Evolution Beyond Definitions: The Historical Principles of the OED

: It describes how people actually use language rather than telling them how they should use it.

: The OED is the primary historical record of the English language.