codex
Concise Oxford English Dictionary © 2008 Oxford University Press:
codex /ˈkəʊdɛks/
▶noun (pl. codices /ˈkəʊdɪsiːz, ˈkɒd-/ or codexes)
- 1 an ancient manuscript text in book form.
- 2 an official list of medicines, chemicals, etc.
– origin C16 (denoting a collection of statutes): from L., lit. ‘block of wood’, later denoting a block split into tablets for writing on, hence a book.
'codex' also found in these Oxford entries:

