Post doc is often used as a shorthand for a postdoctoral position, which is a research position that typically follows a PhD. However, there are several synonyms that could be used to describe this type of work. Some of the most common include research fellow, research associate, scientist-in-training, and postgraduate researcher. These terms all refer to someone who is engaged in research after completing their doctoral degree, with the goal of gaining further experience and expertise in their field. Regardless of the terminology used, postdoctoral positions can be an important stepping stone for academic careers and are highly valued in the scientific community.