family tree

American  

noun

family trees plural

1. a genealogical chart showing the ancestry, descent, and relationship of all members of a family or other genealogical group.

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family tree British  

noun

1. Also called: genealogical tree.  a chart showing the genealogical relationships and lines of descent of a family

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Other Word Forms

Noun Inflected Forms

• family trees
  plural

Etymology

Origin of family tree

First recorded in 1800–10

Example Sentences

See Examples For:

family tree

“Any family tree is going to be filled with colors,” Marshall added.

From Salon ● Jul. 27, 2026

Strangers don’t need to know your whole family tree, which is the first way asking for free advice differs from paying a professional.

From MarketWatch ● Jul. 22, 2026

He describes his modern family tree as a sprawling “tribe,” counting 16 nephews and 42 great-nephews.

From The Wall Street Journal ● Jul. 22, 2026

From those fragments, they worked to determine where the animals fit in the marsupial family tree.

From Science Daily ● Jul. 19, 2026

From that day, the family tree had been split in two: Pax and his descendants on one side, Agatha and hers on the other.

From "The Long-Lost Home" by Maryrose Wood