There are multiple definitions:

1. differential thermal analysis(English)

   • see thermocouple
   • DSC, TG

2. descending thoracic aorta(English)

   • Anatomy, Vascular disease

3. death-thought accessibility(English)

   • COVID-19, TMHM
   • Suicide, Psychology
   • https://doi.org…46.2022.2129052

4. diagnostic test accuracy(English)

   • ADRDA, MCI, NIA, PET, ADD
   • Diagnostics, Standards
   • https://doi.org…651858.CD012884