Encyclopedia

norepinephrine

chem. A hormone which is released by the adrenal medulla and by the sympathetic nerves and functions as a neurotransmitter. It is also used as a drug to raise blood […]

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normal force

phys. Component of support force perpendicular to a supporting surface. For an object resting on a horizontal surface, it is the upward force that balances the weight of the object. […]

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normal line

phys. The normal line is the line drawn perpendicular to the reflective surface of a mirror, or the boundary where refraction occurs (such as the surface of a lens) at […]

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normative

Phil. (སྒྲིག་གཞི་ལ་དད་པའམ་མོས་པ།)

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north pole

phys. The northern end of the earth’s axis of rotation, a point in the Arctic Ocean. སའི་གོ་ལའི་རང་འཁོར་སྲོག་ཤིང་གི་བྱང་ཕྱོགས་ཀྱི་སྣེ་སྟེ། བྱང་སྣེ་རྒྱ་མཚོའི་ནང་གི་ཚེག་ཅིག

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