codex
noun
[ ˈkəʊdɛks ]
• an ancient manuscript text in book form.
• "the great legal compilation known as the Codex Euricianus"
• an official list of medicines, chemicals, etc.
Origin:
late 16th century (denoting a collection of statutes): from Latin, literally ‘block of wood’, later denoting a block split into leaves or tablets for writing on, hence a book.