stepgranddaughter means the daughter of one's stepchild. Lexicurio rates it Rare gem — a strength score of 82 out of 100.
Etymology
From step- + granddaughter.
noun
- The daughter of one's stepchild.
- The stepdaughter of one's child.“Besides her daughter, Joan, of Manhattan, surviving are a brother, Edmund S. Morgan of New Haven, a Pulitzer Prize -winning historian; and a stepgranddaughter.”
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