may be used synonymously with P.I. or advisor. More broadly, a mentor is any colleague who provides support, advice, and perspective on your career trajectory. Often, mentors are at a more advanced career level than their “mentee” (the person being mentored.) However, different life experiences and training can create mentoring relationships that cross career levels, including peer mentoring-support (horizontal mentoring) from colleagues at the same level as the person being mentored.