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Meaning of quaternary twin | Babel Free

Noun CEFR B2

Definitions

First cousins whose parents are a pair of identical twins.

Examples

“Quaternary twins are defined as the offspring born less than nine months apart to two sets of identical siblings. They don’t share⟳ a womb, or even a parent, but the DNA they inherit⟳ from their twin parents makes them not only cousins, but genetic brothers.”
“The boys — who are not only cousins also genetic siblings known as "quaternary twins" — share⟳ the same room and have⟳ close⟳ relationships with all four adults.”
“Quaternary twins occur⟳ when one set⟳ of identical twins has children with another set⟳ of identical twins.”

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

quaternation quaternion quaternion algebra quaternionics quaternionist quaternity

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