Source : Webster's Revised Unabridged Dictionary (1913)

Codex \Co"dex\, n.; pl. {Codices}. [L. See {Code}.]
   1. A book; a manuscript.

   2. A collection or digest of laws; a code. --Burrill.

   3. An ancient manuscript of the Sacred Scriptures, or any
      part of them, particularly the New Testament.

   4. A collection of canons. --Shipley.

Source : WordNet®

codices
     See {codex}

codex
     n 1: an official list of chemicals or medicines etc.
     2: an unbound manuscript of some ancient classic (as
        distinguished from a scroll) [syn: {leaf-book}]
     [also: {codices} (pl)]