Noun an has 1 sense
  1. Associate in Nursing, AN - an associate degree in nursing
    --1 is a kind of neural structure; associate degree, associate; neural structure; associate degree, associate
    --1 is a part of nervous system, systema nervosum
    --1 has parts:
     autonomic ganglion; sympathetic nervous system; parasympathetic nervous system, parasympathetic
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