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Dexter and sinister


Dexter and sinister are terms used in heraldry to refer to specific locations in an escutcheon bearing a coat of arms, and to the other elements of an achievement. "Dexter" (Latin for "right") means to the right from the viewpoint of the bearer of the shield, i.e. the bearer's proper right, to the left from that of the viewer. "Sinister" (Latin for "left") means to the left from the viewpoint of the bearer, the bearer's proper left, to the right from that of the viewer.

The dexter side is considered the side of greater honour, for example when impaling two arms. Thus, by tradition, a husband's arms occupy the dexter half of his shield, his wife's paternal arms the sinister half. The shield of a bishop shows the arms of his see in the dexter half, his personal arms in the sinister half. King Richard II adopted arms showing the attributed arms of Edward the Confessor in the dexter half, the royal arms of England in the sinister. More generally, by ancient tradition, the guest of greatest honour at a banquet sits at the right hand of the host. The Bible is replete with passages referring to being at the "right hand" of God.

Sinister is used to mark that an ordinary or other charge is turned to the heraldic left of the shield. A bend sinister is a bend which runs from the bearer's top left to bottom right, as opposed to top right to bottom left. As the shield would have been carried with the design facing outwards from the bearer, the bend sinister would slant in the same direction as a sash worn diagonally on the left shoulder.

This division is key to dimidiation, a method of joining two coats of arms by placing the dexter half of one coat of arms alongside the sinister half of the other. In the case of marriage, the dexter half of the husband's arms would be placed alongside the sinister half of the wife's. The practice fell out of use as early as the 14th century and was replaced by impalement, as in some cases, it could render the arms that are cut in half unrecognizable and in some cases, it would result in a shield that looked like one coat of arms rather than a combination of two.


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