trisomy

[ trahy-soh-mee ]

/ ˈtraɪ soʊ mi /

noun Pathology.

an abnormality characterized by the presence of an additional chromosome to the normal diploid number.

Words nearby trisomy

trisoctahedron, trisodium, trisodium phosphate, trisome, trisomic, trisomy, trisomy 13, trisomy 21 syndrome, trispast, trispermous, trisplanchnic

Origin of trisomy

First recorded in 1925–30; tri- + -some³ + -y³

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for trisomy

In the eyes of many medical professionals, a child with Trisomy 18 is doomed.
Feeding Tubes, NICU, One-on-One Care: Susan Hatfield Talks About Living With Her Trisomy 18 Baby|Susan Hatfield|February 1, 2012|DAILY BEAST
Most prominent in all of the literature: Trisomy 18 is often fatal.
Feeding Tubes, NICU, One-on-One Care: Susan Hatfield Talks About Living With Her Trisomy 18 Baby|Susan Hatfield|February 1, 2012|DAILY BEAST
When we are able to pause for a time, Jeff and I read about Trisomy 18.
Feeding Tubes, NICU, One-on-One Care: Susan Hatfield Talks About Living With Her Trisomy 18 Baby|Susan Hatfield|February 1, 2012|DAILY BEAST

British Dictionary definitions for trisomy

trisomy

/ (ˈtraɪsəʊmɪ) /

noun

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

Derived forms of trisomy

trisomic (traɪˈsəʊmɪk), adjective

Word Origin for trisomy

C20: from tri- + (chromo) som (e) + -y ³

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for trisomy

trisomy

[ trī-sō′mē, trī′sō′- ]

n.

The condition of having three copies of a given chromosome or chromosome segment in each somatic cell rather than the normal number of two.

Other words from trisomy

tri•so′mic adj.

Scientific definitions for trisomy

trisomy

[ trī-sō′mē, trī′sō′- ]

The condition of having three copies of a given chromosome in each body cell rather than the normal number of two.