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