1.To give cetain information to; to assure; to make certain. "We certify the king, that... thou shalt have no portion on this side the river."
2.To give certain information of; to make certain, as a fact; to verify. "The industry of science at once certifies and greatly extends our knowledge of the vastness of the creation."
3.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."
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