R has various meanings in the Medicine category. Discover the full forms, definitions, and usage contexts of R in Medicine.
A drift dropped through tubulars on the rig floor before joint make up.
MedicineA receptor is a molecule or a polymeric structure in or on a cell that specifically recognizes and binds a compound acting as a molecular messenger (neurotransmitter, hormone, lymphokine, lectin, drug, etc.).
MedicineResistance, represented by the symbol R and measured in ohms, is a measure of the opposition to electrical flow in DC systems. Resistance is the voltage across an element divided by the current (R = V/I).
MedicineThe superscription of a prescription, usually indicated by the sign. A prescription or formula.
MedicineLine from a VOR or NDB. For example, the 180 radial from a VOR represents a line south of that VOR. In a direction directly outward from the center of a circle or sphere or from the axis of a cylinder. The spokes of a wheel, for example, are radial. A magnetic bearing extending from a very high frequency omni-range and/or tactical air navigation station.
MedicineAn atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)
MedicineThe rectum is the final straight portion of the large intestine in some mammals, and the gut in others. The human rectum is about 12 centimetres long, and begins at the rectosigmoid junction, at the level of the third sacral vertebra or the sacral promontory depending upon what definition is used.
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