There are multiple definitions:

1. indirect contact(English)

   • ECG
   • Electrophysiology

2. invasive ductal carcinoma(English)

   • Oncology

3. idiopathic dilated cardiomyopathy(English)

   • IDCM
   • Cardiology, Pathology

4. infiltrating ductal carcinoma(English)

   • in 10 to 20% of all cases, a round and well-defined mammary lump may correspond to a cancer, most often consisting of grade III infiltrating ductal carcinoma
   • Mammary gland, Oncology, Diagnostics, Medical imaging, Classification
   • https://doi.org…iii.2013.04.003