Look up: trisomy

1. 
   trisomy
   [n] - chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. 
   Trisomy
   the presence in the cells of three copies of a certain chromosome instead of the normal two copies
   Found on http://www.medichecks.com/glossary.cfm?l
   
   
3. 
   Trisomy
   Trisomy: The presence of three copies of a chromosome rather than the normal two. The most common trisomies in newborns are trisomy 13 (Patau syndrome), trisomy 18 syndrome (Edwards syndrome) and trisomy 21 (Down syndrome). The most common trisomy among spontaneous abortions is trisomy 16. See also: Recurrent trisomy.
   Found on http://www.medterms.com/script/main/art.
   
   
4. 
   trisomy
   An additional copy of a chromosome so that there are three copies not two in a diploid organism. Best known example is trisomy 21 in Down's syndrome.
   Found on
   
   
5. 
   trisomy
   <genetics, molecular biology> Term which indicates the presence of an additional whole chromosome. Each cell usually has 46 but in trisomy this is increased to 47. ... (13 Nov 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
6. 
   trisomy
   noun chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
7. 
   Trisomy
   A `trisomy` is a form of aneuploidy with the presence of three copies, instead of the normal two, of a particular chromosome. The presence of an extra chromosome 21, which is found in Down syndrome, is called trisomy 21.
   Found on http://en.wikipedia.org/wiki/Trisomy
   
   
8. 
   trisomy
   (tri´so-me) the presence of an additional (third) chromosome of one type in an otherwise diploid cell (2n + 1). adj., triso´mic., adj.
   Found on http://www.mercksource.com/pp/us/cns/cns
   
   
9. 
   trisomy
   (from the article `chromosomal disorder`) ...Twenty-two of the pairs are autosomes, and one pair, number 23, is the sex chromosomes. Any variation from this pattern causes abnormalities. A ... The most common form of aneuploidy in humans results in Down syndrome, a suite of specific disorders in individuals possessing an extra chromosom...
   Found on http://www.britannica.com/eb/a-z/t/82
   
   
10. 
    trisomy
    The state of an individual or cell with an extra chromosome instead of the normal pair of homologous chromosomes; in humans, the state of a cell containing 47 normal chromosomes. [tri- + (chromo)some]
    Found on
    
    
11. 
    Trisomy
    Possessing three copies of a particular chromosome instead of the normal two copies.
    Found on http://www.ornl.gov/sci/techresources/Hu
    
    
12. 
    trisomy
    Possessing three copies of a particular chromosome instead of the normal two copies.
    Found on http://www.daviddarling.info/encyclopedi