codex
US /ˈkoʊ.deks/
UK /ˈkoʊ.deks/

1.
an ancient manuscript text in book form, typically used for religious or historical texts
:
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The ancient codex contained rare biblical texts.
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Scholars are studying the newly discovered Mayan codex.
2.
a collection of statutes or laws
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The legal codex outlines the rights of citizens.
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The new ethical codex was adopted by the medical association.