n.
Pronunciation: ' tr ī - ˌ s ō -m ē
Function: noun
Inflected Form: plural -mies
Etymology: tri- + 3 -some + 2 -y
Date: 1930
: the condition (as in Down syndrome) of having one or a few chromosomes triploid in an otherwise diploid set
– tri · so · mic \ ( ˌ )tr ī - ' s ō -mik \ adjective or noun