fraternal twin

noun
one of a pair of twins, not necessarily resembling each other, or of the same sex, that develop from two separately fertilized ova.
Compare identical twin.


Origin:
1900–05

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Dictionary.com's 21st Century Lexicon
Main Entry:  fraternal twin
Part of Speech:  n
Definition:  nonidentical twins who developed from two separate fertilized eggs; also called dizygotic twin
Dictionary.com's 21st Century Lexicon
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Example sentences
For example, compare identical twin correlations on a trait with fraternal twin correlations.
He is a stockholder in a company known to cognoscenti in the hearing room as a fraternal twin of the intelligence establishment.
Twin ovulations are the first prerequisite for fraternal twin births.
In one of these cases, a sample of the fraternal twin's hair was present in the known pool and was correctly eliminated.
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