1.vb. to teach or condition an individual to perform certain responses, behaviors, tasks, or activities, particularly in a learning experiment. 2.n. a succession of mild electrical impulses, such as is given in brain stimulation.
n. the number that when multiplied by another number gives a result of 1. The reciprocal of x is therefore 1/x and that of 1/x is x. So, for example, 1/4 is the reciprocal of 4.