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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.

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

That’s more than eight times higher than the expenses on Vanguard’s real-estate index fund and its identical twin exchange-traded fund.

From The Wall Street Journal • Nov. 7, 2025

Se Youn “Steve” Kim, 41, and his identical twin brother, Hee Youn “Ted” Kim, 41, were arrested Thursday morning by federal authorities and pleaded not guilty.

From Los Angeles Times • Sep. 12, 2025

The restaurant initially mistook Paul for his identical twin "coming back for seconds" and denied him any food.

From BBC • May 31, 2025

And I still haven't told him about my e-mail relationship with my secret admirer, who may or may not be his identical twin brother, who is also the one who stood me up.

From "From Twinkle, with Love" by Sandhya Menon

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