The Viaticum reference article from the English Wikipedia on 24-Jul-2004
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Viaticum

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Viaticum, a Latin word originally meaning 'travelling provisions', is used in Roman Catholicism for the Eucharist (consecrated host) administered to a dying person.

(The word beaticum, sometimes found in place of viaticum, is incorrect; it has probably arisen from mishearing, or from a vague association with beatus = blessed.)