Definition of dimidiation in English:

dimidiation

Syllabification: di·mid·i·a·tion
Pronunciation: /diˌmidēˈāSHən
 
/

noun

Heraldry
The combination of two coats of arms by juxtaposing the dexter half of one and the sinister half of the other on a single shield (a practice largely superseded by impalement).
More example sentences
  • In Germany, dimidiation is still a common method of marshalling, where one or both of two coats of arms in a combination will be halved, as in the arms of Loschau.
  • This type of union is known as dimidiation.
  • It should suffice to note that marshalling of arms is generally accomplished by either: dimidiation, impalement, quartering or superimposition.

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