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trisome
tri·so·my T0368700 (trī-sō′mē, trī′sō′-)n. pl. tri·so·mies The condition of having three copies of a given chromosome in each somatic cell rather than the normal number of two.
[tri- + -som(e) + -y.]
tri′some′ n.tri·so′mic adj.trisome (ˈtraɪsəʊm) n (Biology) a chromosome occurring three times (rather than twice) in a cellEncyclopediaSeeTrisomyMedicalSeetrisomy |