verb[with object] Heraldry
1(Of a coat of arms or charge) adjoin (another) so that only half of each is visible.
- The crest has an oak tree dimidiated with a wheatsheaf, bound together by a blue and white wave.
- In the upper part of the Shield a lion passant guardant dimidiates the hulk of a medieval ship.
- These were, in the Portuguese version, per pale argent and vert, two roses dimidiating as many fleurs-de-lis, in dexter canton a dove volant argent.
1.1 (as adjective dimidiated) (Of a charge) having only one half depicted.
- The bordures themselves were often dimidiated or even quartered and various lines of partition were used, so that the inside of the bordure might be engrailed or wavy.
- The arms of Connacht - a dimidiated (divided in half from top to bottom) eagle and armed hand - are recorded as such on a map of Galway dated 1651, now in the library of Trinity College, Dublin.
- Francoise's arms in Louis's Book of Hours (Fig.17 in body of article) are also dimidiated.
Late 16th century: from Latin dimidiat- 'halved', from the verb dimidiare, from dimidium 'half'.
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