How to pronounce“triom”in English

lives blindly knowing that there were risks out there um you know think about parents these days women who are in their 40s who decide to get pregnant andthey want to test the fetus to see if it has Down syndrome or another triom or whatever it might be a genetic problem which we know the risks up because weknow that older women have higher risks of these things some women choose not to get tested but most do get tested they want to know what those risks are um I I