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English definition of “great-”

great-

  /ɡreɪt/ prefix
great-grandfather/-grandmother the father or mother of your grandfather or grandmother
great-aunt/-uncle the aunt or uncle of your mother or father
great-grandchild, -granddaughter, etc. the child, daughter, etc. of your grandson or granddaughter
great-niece/-nephew the daughter or son of your niece or nephew
(Definition of great- prefix from the Cambridge Essential Dictionary © Cambridge University Press)

Definitions of “great-” in other dictionaries

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