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The Collaborative International Dictionary
Comprobation

Comprobation \Com`pro*ba"tion\, n. [L. comprobatio.]

  1. Joint attestation; proof. [Obs.]
    --Sir T. Browne.

  2. Approbation. [Obs.]
    --Foxe.

Wiktionary
comprobation

n. 1 (context obsolete English) joint attestation; proof 2 (context obsolete English) approbation