Author: Glossary
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Trisulfate
A chemical compound containing three sulfate, S04, groups.
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Tristichia
The presence of three rows of eyelashes.
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Trismoid
Of the nature of trismus. A type of lockjaw seen in newborn infants, thought to result from pressure on the back of the skull during childbirth.
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Trisaccharide
A carbohydrate that on hydrolysis yields three molecules of simple sugars (monosaccharides).
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Triradius
In classifying fingerprints, the point of convergence of dermal ridges coming from three directions.
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Triptan
A class of medications used to treat cluster and migraine headaches. Members of this class act as agonists at 5-hydroxytryptamine (5-HT) receptors in the brain. Each of them has a generic name that ends in “-triptan,” including frovatriptan, naratriptan, rizatriptan, and sumatriptan. A category of medications that attach to serotonin receptors and imitate the effects…
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Tripoding
The use of three bases for support (e.g., two legs and a cane, or one leg and two crutches).
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Triplopia
A condition in which three images of the same object are seen.
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Triploidy
In the human, having three sets of chromosomes. The condition in which an individual possesses three complete sets of chromosomes instead of the typical two.
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Triple-marker test
Testing for Down syndrome by assessing maternal serum levels of alpha-fetoprotein, human chorionic gonadotropin, and unconjugated estriol. The test is sometimes used as an alternative to amniocentesis.