Medical Definition of afferent. : bearing or conducting inward; specifically : conveying impulses toward the central nervous systemâcompare efferent.
Imperial Weight Units. The imperial system of weights, or more correctly the avoirdupois system of weights is the standard system of weight in the United States and is still in common usage in the United Kingdom. The system is based on a pound (lb) of 16 ounces (oz).
The system of imperial units or the imperial system is the system of units first defined in the British Weights and Measures Act of 1824, which was later refined and reduced. The Imperial units replaced the Winchester Standards, which were in effect from 1588 to 1825. The system came into official use across the British Empire. By the late 20th century, most nations of the former empire had officially adopted the metric system as their main system of measurement, although some imperial units are