Definition of "highnesses" [highnesses]

• Plural form of highnesse. (noun)

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• "Researchers, scientists, heads of state, diabetes organizations, professors, medical practitioners -- and several of Dubai's royal highnesses including His Highness Sheikh Hamdan Bin Rashid Al Maktoum, Deputy Ruler of Dubai, and His Excellency Qadhi Saeed Al Murooshid from the Dubai Health Authority -- are here to stem the tide of diabetes."
• "As if the commoner Middletons were not worrying enough to royal scholars such as James Whitaker, there had to be a risk that Goldsmith, a property developer, might, with his record of upstart hedonism actively contaminate an occasion featuring a King of Saudi Arabia, their Tonganese highnesses and the hardly less eminent royal broadcaster, ITN's Tom Bradby."
• "Charles' office, Clarence House, confirmed the attack but said "their royal highnesses are unharmed.""