There are multiple definitions:

1. decayed, missing or filled tooth surface(English)

   • DMF, DMFT
   • Dentistry

2. distant metastasis-free survival(English)

   • defined as the time interval between the day of reference in the study (depends on the study: date of randomisation, date of diagnosis, etc) and the date of the occurrence of distant metastases (including liver and non-liver metastases) or death (all causes), whichever occurs first
   • OS, RFS
   • Oncology, Prognosis, Liver disease
   • https://doi.org…jca.2014.07.011
   • https://doi.org…CO.2011.41.3799