noun
: a cord of nervous tissue ; specifically : the pair of closely united ventral longitudinal nerves with their segmental ganglia that is characteristic of many elongate invertebrates (as earthworms)
noun
: a cord of nervous tissue ; specifically : the pair of closely united ventral longitudinal nerves with their segmental ganglia that is characteristic of many elongate invertebrates (as earthworms)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012