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identical twin
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noun
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.
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Compare fraternal twin.
Origin of identical twin
First recorded in 1885â90
Words nearby identical twin
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023