certify

certify is defined in Webster's Unabridged Dictionary (1913) with 2 senses. The full text of each entry is reproduced verbatim below.

Definitions

1.2. To give certain information of; to make certain, as a fact; to verify. Hammond. The industry of science at once certifies and greatly extends our knowledge of the vastness of the creation. I. Taylor.
2.To testify to in writing; to make a declaration concerning, in writing, under hand, or hand and seal. The judges shall certify their opinion to the chancellor, and upon such certificate the decree is usually founded. Blackstone. Certified check, A bank check, the validity of which is certified by the bank on which it is drawn.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Definitions: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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