Ad hoc is a Latin phrase meaning literally 'to this'. In English, it generally signifies a solution designed for a specific problem or task, non-generalizable, and not intended to be adapted to other purposes
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Training [[neurosurgical resident]]s about [[intraoperative decision-making]] appears to be [[ad-hoc]] and dependent on both the [[institution]] and the availability and willingness of [[senior]] surgeons to make this a part of their pedagogy
((Granek L, Shapira S, Roth J, Constantini S. Can Good Intraoperative Judgement Be Taught?: Pediatric Neurosurgeons' Pedagogical Approaches to Training [[Resident]]s on Intraoperative Decision-Making. J Surg Educ. 2021 Apr 2:S1931-7204(21)00059-3. doi: 10.1016/j.jsurg.2021.03.006. Epub ahead of print. PMID: 33814338.)).