fraternal twin

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frater′nal twin′

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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.fraternal twin - either of two twins who developed from two separate fertilized eggs
twin - either of two offspring born at the same time from the same pregnancy
References in periodicals archive ?
We noted above that "vanished fraternal twin"--more properly known as tetragametic chimerism--is one possible source of somatic microchimerism.
* A survey of identical and fraternal twin pairs at the Twins Days Festival in Twinsburg, OH, and published in the April issue of the Journal of Drugs in Dermatology, shows acne may be primarily caused by genetics.
Eighteen-year-old Vera Rivers has been living with tragedy since the disappearance of her fraternal twin sister, Ava, one Halloween night when both were six.
Upon learning that their mother has been lying to them for years about their allegedly deceased father, two fraternal twin brothers hit the road in order to find him.
Her lab partner, Bill, is her loyal sidekick, whom she adores like a fraternal twin. Their adventures, chronicled here in high style, include overturning a van during a snowstorm, hanging off the sides of cliffs in Northern Alaska and tromping through Irish highlands in search of moss.
With her fraternal twin, Joyce, Pat was a guiding light in the Yngling class, which made its entrance to the Olympic Games in 2004.
In the other corner stands the Duke's fraternal twin, George Bush.
Fraternal twin Segal (psychology, California State U., Fullerton; Twin Studies Center) describes a case of identical twins switched at birth and the biological, psychological, and legal implications for recipients of donated sperm/eggs and adoptees as well.
Despite the genetic diversity between fraternal twins, the probability that a child would have autism or autism spectrum disorder (ASD) if his / her fraternal twin did was greater than that found in previous studies - thus suggesting that shared environment may play a greater causative role than previously suspected.
The .38 revolver's fraternal twin in the new Smith & Wesson Bodyguard line is the Bodyguard 380.
(Schizophrenics often hear voices that don't exist, among other symptoms.) When one fraternal twin has the same illness, on the other hand, the other one has only a 10 percent chance of having it.
Kim Powers and his fraternal twin brother, Tim, were close as children, somewhat estranged as adolescents, and after that pretty much at loggerheads.