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From The Collaborative International Dictionary of English v.0.48:
Neural \Neu"ral\, a. [Gr. ney^ron nerve.] (Anat. & Zool.) relating to the nerves or nervous system; taining to, situated in the region of, or on the side with, the neural, or cerebro-spinal, axis; -- opposed to hemal. As applied to vertebrates, neural is the same as dorsal; as applied to invertebrates it is usually the same as ventral. Cf. Hemal. [1913 Webster] Neural arch (Anat.), the cartilaginous or bony arch on the dorsal side of the centrum of the vertebra in a segment of the spinal skeleton, usually inclosing a segment of the spinal cord. [1913 Webster]