CODEX

PRONUNCIATION: (KOH-deks)

MEANING: noun: A manuscript volume (as opposed to a scroll), especially of an ancient text.

ETYMOLOGY: From Latin codex (tree trunk, wood block, book). Earliest documented use: 1581.

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EODEX - amphetamine for horses, banned at racetracks (see also GODEX)

COPEX - police officer's former spouse

CODEO - competition for computer programmers