Also known as: od.
OD has various meanings in the Medicine category. Discover the full forms, definitions, and usage contexts of OD in Medicine.
Once means one time. An example of once is doing something one day each week, once a week. One time only. Once a day.
MedicineA type of cell in the central nervous system. The oligodendrocytes surround and insulate the long fibers (axons) through which the nerves send electrical messages.
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