great-granddaughter

• great granddaughter, greatgranddaughter

From great- +‎ granddaughter.

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great-granddaughter (plural great-granddaughters)

1. The daughter of someone's grandchild.

Additional instances of "great-" can be prepended to the term, each indicating one further generation of descent. For large numbers of generations a number can be substituted, for example, "fourth great-granddaughter", "four-greats granddaughter" or "four-times-great-granddaughter".