TRISOMY

Pronunciation (US):

(GB):

 Dictionary entry overview: What does trisomy mean? 

• TRISOMY (noun)
  The noun TRISOMY has 1 sense:

1. chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell

  Familiarity information: TRISOMY used as a noun is very rare.

 Dictionary entry details 

• TRISOMY (noun)

Sense 1

Meaning:

Chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell

Classified under:

Nouns denoting stable states of affairs

Hypernyms ("trisomy" is a kind of...):

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)

Hyponyms (each of the following is a kind of "trisomy"):

Down's syndrome; Down 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)

 Context examples 

It may be associated with trisomy 8.

(Ovarian Sertoli-Leydig Cell Tumor, NCI Thesaurus)

The sporadic papillary renal cell carcinoma is characterized by trisomy of chromosomes 7, 16, and 17, and loss of chromosome Y.

(Papillary Renal Cell Carcinoma, NCI Thesaurus)

Autosomal aneuploidy not associated with trisomy.

(Non-Trisomic Autosomal Aneuploidy, NCI Thesaurus)

Disruptions in this process may result in aneuploidy of the resulting gametes, infertility in affected patients and trisomy in progeny.

(Meiotic Recombination, NCI Thesaurus)

Also known as trisomy 21 syndrome.

(Down Syndrome, NCI Thesaurus)

In a normally diploid cell the loss of a chromosome pair is termed nullisomy (symbol: 2N-2), the loss of a single chromosome is monosomy (symbol: 2N-1), the addition of a chromosome pair is tetrasomy (symbol: 2N+2), the addition of a single chromosome is trisomy (symbol: 2N+1).

(Aneuploidy, NLM, Medical Subject Headings)