01 n. Relationship by blood; descent from the same original; kindred.
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1.
Relationship by blood; descent from the same original; kindred.“As by our cognation to the body of the first Adam.” — Jer. Taylor.
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2.
Participation of the same nature.“A like temper and cognation.” — Sir K. Digby.
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3.
That tie of consanguinity which exists between persons descended from the same mother; -- used in distinction from agnation.(Law)