arcana.
Specialized knowledge that is mysterious to the uninitiated.
Meaning & usage
Specialized knowledge that is mysterious to the uninitiated.
Where this word comes from
From Latin arcānus (“hidden, secret”), from arcēre (“to withhold”), arca (“a chest”).
plural of arcanum
Where this word comes from
From Latin arcānus (“hidden, secret”), from arcēre (“to withhold”), arca (“a chest”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.