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trisomy (n.)

1930, from trisome (from tri- + ending from chromosome) + -y (4).

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Definitions of trisomy from WordNet

trisomy (n.)
chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell;
From wordnet.princeton.edu

Dictionary entries near trisomy

trisect

trisexual

triskaidekaphobia

triskelion

trismus

trisomy

trist

Tristram

trite

triticale

tritium

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