Meaning of TRISOMY

Pronunciation:			'trIsowmee
WordNet Dictionary
	Definition:		[n]  chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell
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	See Also:		chromosomal aberration, chromosomal anomaly, chromosonal disorder, chrosomal abnormality, Down syndrome, Down's syndrome, mongolianism, mongolism, trisomy 21
Biology Dictionary
	Definition:		A cell or organism which has two full sets of chromosomes (is thus diploid), but has a third copy of one of its chromosomes. Organisms which are trisomic generally also suffer from physical and/or mental disabilities or abnormalities.
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Glossary
	Definition:		Possessing three copies of a particular chromosome instead of the normal two copies.
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