dimidiationn.
/dɪˌmɪdɪˈeɪʃən//dʌɪˌmɪdɪˈeɪʃən/ The action of halving, or condition of being halved; spec. in Heraldry the combination or ‘marshalling’ of two coats of arms by placing side by side the dexter half of one and the sinister half of the other; an early form of impalement.
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the world > relative properties > number > specific numbers > two > division into two > [noun] > division into two equal parts
dimidiation?c1425
mediation?c1425
halvingc1430
bisection1656
hemisection1878
medisection1887
semisection1889
society > communication > indication > insignia > heraldic devices collective > [noun] > armorial bearings or coat of arms > the various coats combined on a shield > combining two or more coats > specific
quarteringa1450
impaling1605
discincture1610
impalement1778
dimidiation1780
tierce1847
dimidiating1864
?c1425 Crafte Nombrynge in R. Steele Earliest Arithm. in Eng. (1922) 7 Þer ben .7...partes of þis craft. The first is called addicion, þe seconde.. subtraccion. The thryd is called duplacion. The 4...dimydicion.
1658 E. Phillips New World Eng. Words Dimidiation, a dividing in the midst, a cutting into two halves.
1780 J. Edmondson Compl. Body Heraldry I. 179 This method of impaling arms by dimidiation, hath been for some time laid aside in England.
1847 Parker Gloss. Her. 113 Dimidiation, the dexter half of the husband's arms being joined to the sinister half of the wife's.
1866 J. E. Cussans Gram. Heraldry 56 It was anciently the custom to combine the arms of the wife with those of her husband by dimidiation.
This entry has not yet been fully updated (first published 1896; most recently modified version published online June 2022).
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n.?c1425