trisomy


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tri·so·my

 (trī-sō′mē, trī′sō′-)
n. pl. tri·so·mies
The condition of having three copies of a given chromosome in each somatic cell rather than the normal number of two.

[tri- + -som(e) + -y.]

tri′some′ n.
tri·so′mic adj.

trisomy

(ˈtraɪsəʊmɪ)
n
(Medicine) the condition of having one chromosome of the set represented three times in an otherwise diploid organism, cell, etc. Trisomy of chromosome 21 results in Down's syndrome
[C20: from tri- + (chromo)som(e) + -y3]

tri•so•my

(ˈtraɪ soʊ mi)

n.
a genetic deviation characterized by the presence of three chromosomes where there are usually a pair.
[1925–30; tri- + -some3 + -y3]
tri•so′mic, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.trisomy - chrosomal abnormality in which there is one more than the normal number of chromosomes in a celltrisomy - chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell
Down syndrome, Down's syndrome, mongolianism, mongolism, trisomy 21 - a congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation
chromosomal aberration, chromosomal anomaly, chromosonal disorder, chrosomal abnormality - any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities
Translations

tri·so·my

n. trisomía, trastorno genético por el cual una persona posee tres cromosomas homólogos por célula en lugar de dos (diploide), lo cual causa deformaciones fetales serias.

trisomy

n trisomía; — 21 trisomía 21
References in periodicals archive ?
Prenatal diagnosis of a partial trisomy 13q (q14→qter): Phenotype, cytogenetics and molecular characterization by spectral karyotyping and array comparative genomic hybridization.
gov/condition/trisomy-13) Genetic Home Reference , the National Library of Medicine website for consumer information about genetic conditions, Trisomy 13 or the Patau syndrome is associated with harsh intellectual disability and certain physical aberrations in parts of the body.
Trisomy 7 was observed most frequently in both study cohorts, followed by trisomies 15, 16 and 22.
Klinefelter Syndrome and Trisomy X are known as sex chromosome aneuploidy, or variations in the typical number of chromosomes.
Due to her Trisomy 18 condition, a DNR had been verbally ordered into her chart by an "attending" physician without parental notice or consent.
Ductus venosus Doppler (DVD) measurements were obtained throughout the 6-month period from women who underwent amniocentesis procedures due to increased risk for trisomy 21 in terms of first or second trimester screening test results.
The union of z scores and ANN results was used to classify samples as fetal euploid, fetal trisomy 21, or fetal trisomy 18.
She subsequently had a spontaneous miscarriage, and karyotyping of the products of conception confirmed trisomy 18.
In this report, we present a male case of mosaic trisomy 9 with higher survival than the mean survival mentioned for this chromosome disorder and no CNS structural abnormality, which shows the wide range of clinical manifestation of this disorder.
Edwards syndrome phenotype results from full, mosaic or partial trisomy 18q.
sup][1],[2] DS can be caused by three types of chromosomal abnormalities: Trisomy 21, translocation, or mosaicism.
3,6,9) Although the laboratories use somewhat different techniques, all of them share very high sensitivity and specificity for detection of trisomy 21 (TABLE 1).