Trisomy 18 (Edwards Syndrome) Glossary of Terms

The following are health and medical definitions of terms that appear in the Trisomy 18 (Edwards Syndrome) article.

Abnormal: Outside the expected norm, or uncharacteristic of a particular patient.

Atypical: Unusual, or not fitting a single diagnostic
category.

Cell: The basic structural and functional unit of any living thing. Each cell is a small c...

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Chromosome: A carrier of genetic information that is visible under an ordinary light micro...

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Chromosomes: The microscopically visible carriers of the genetic material. They are compos...

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Edwards syndrome: Trisomy 18 syndrome. Children with the syndrome have an extra chromosome...

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Genetic: Having to do with genes and genetic
information.

Heart: The muscle that pumps blood received from veins into arteries throughout the body. ...

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Jaw: The movable junction of the bones below the mouth (the mandible) and the bone just ab...

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Mosaic: A person or a tissue that contains two or more types of genetically different cell...

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Mouth: 1. The upper opening of the digestive tract, beginning with the lips and con...

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Nondisjunction: Failure of paired chromosomes to separate (to disjoin) during cell divisio...

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Prognosis: The forecast of the probable outcome or course of a disease; the patient's chan...

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Random: Determined solely by chance.

Reproductive cells: The eggs and sperm are the reproductive cells. Each mature reproductiv...

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Sperm: A sperm is the male "gamete" or sex cell. It combines with the female &qu...

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Syndrome: A combination of symptoms and signs that together represent a disease process.

Trisomy: The presence of three copies of a chromosome rather than the normal two. The most...

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Trisomy 18 syndrome: The presence of three copies of chromosome 18, rather than the normal...

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