Definition of dimidiate in English:

dimidiate

verb

[WITH OBJECT]Heraldry
  • 1(of a coat of arms or charge) adjoin (another) so that only half of each is visible.

    • ‘In the upper part of the Shield a lion passant guardant dimidiates the hulk of a medieval ship.’
    • ‘The crest has an oak tree dimidiated with a wheatsheaf, bound together by a blue and white wave.’
    • ‘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.’
    • ‘The pomegranate dimidiated with a rose, meaning that the two half charges are joined, was one of the badges of Queen Mary of England, who ruled from 1553-1558.’
    • ‘In the base is a kneeling canon between two shields, one bearing the arms of Basset of Weldon dimidiating those of Ridel, the other bearing the arms of Basset of Weldon alone.’
    1. 1.1as adjective dimidiated (of a charge) having only one half depicted.
      • ‘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.’
      • ‘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 canton is the arms of the Cinque Ports: per pale gules and azure three lions passant guardant dimidiated and conjoined to the hulks of as many ancient ships all in pale or.’
      • ‘Francoise's arms in Louis's Book of Hours (Fig.17 in body of article) are also dimidiated.’

Origin

Late 16th century: from Latin dimidiat- ‘halved’, from the verb dimidiare, from dimidium ‘half’.

Pronunciation

dimidiate

/dəˈmidēˌāt/