The state or condition of sharing an inheritance or property equally with others as coparceners.
From co- + parceny (variant of parcenary, from Old French parcenier). The term consolidated the concept of joint inheritance into a single noun describing the shared condition.
Coparceny is nearly extinct in modern law, but it's the reason British heraldry developed the quartering system—coparceners needed visual ways to distinguish their shares and claim their inheritance pieces.
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