identical twin
noun
: either member of a pair of twins that are produced from a single egg and who look exactly alike
Examples of identical twin in a Sentence
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Although studies in identical twins have found that genetics can account for as much as 80% of the reason a person has obesity, lifestyle factors still play a huge role, Kim said.
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Kaitlin Sullivan, NBC news, 21 July 2025
The four boys and four girls, including a set of identical twins, need to be followed longer to confirm the procedure is safe and effective, the researchers say.
—Rob Stein, NPR, 16 July 2025
Overall, identical twins tended to have more similar eating times and chronotypes than fraternal twins, showing moderate heritability.
—New Atlas, 13 July 2025
Researches looked at both fraternal and identical twins to determine genetic and environmental factors that impact crying.
—Melissa Willets, Parents, 10 July 2025
See All Example Sentences for identical twin
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Kaitlin Sullivan, NBC news, 21 July 2025
The four boys and four girls, including a set of identical twins, need to be followed longer to confirm the procedure is safe and effective, the researchers say.
—Rob Stein, NPR, 16 July 2025
Overall, identical twins tended to have more similar eating times and chronotypes than fraternal twins, showing moderate heritability.
—New Atlas, 13 July 2025
Researches looked at both fraternal and identical twins to determine genetic and environmental factors that impact crying.
—Melissa Willets, Parents, 10 July 2025
See All Example Sentences for identical twin
Cite this Entry
“Identical twin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/identical%20twin. Accessed 19 Aug. 2025.
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