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Synonyms

identical twin

American  

noun

  1. one of a pair of twins who develop from a single fertilized ovum and therefore have the same genotype, are of the same sex, and usually resemble each other closely.


Etymology

Origin of identical twin

First recorded in 1885–90

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

A woman given six months to live after her leukaemia returned says the thought of leaving her identical twin sister alone is "unthinkable".

From BBC Jun. 9, 2026

James Warren Whittaker was born on Feb. 10, 1929, in Seattle, 10 minutes before his identical twin brother, Louis.

From The Wall Street Journal Apr. 15, 2026

"I always wished I was an identical twin - I liked being a twin, but being an identical twin is a bit cooler," Grace said.

From BBC Feb. 24, 2026

It might be granted that a reactionary is not a conservative’s identical twin — but he is a sibling living under the same roof.

From Salon Nov. 1, 2025

On the morning she arrived, Virgil’s parents and identical twin brothers immediately rushed her in a flood of hugs and hellos.

From "Hello, Universe" by Erin Entrada Kelly

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