<p><strong>Noun</strong></p><ul><li>a document serving as evidence or as written testimony, as of status, qualifications, privileges, or the truth of something.</li><li>a document attesting to the fact that a person has completed an educational course, issued either by an institution not authorized to grant diplomas, or to a student not qualifying for a diploma.</li><li>Law: a statement, written and signed, which is by law made evidence of the truth of the facts stated, for all or for certain purposes.</li><li>Finance: gold certificate.</li><li>silver certificate.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object)</li><li>certified</li><li>certifying</li><li>to furnish with or authorize by a certificate.</li><li>to issue an official certificate attesting to the training, aptitude, and qualification of: to certificate a teacher.</li></ul>