means Relating to nerves or the nervous system — and, by extension, to computing systems modeled loosely on how brain cells connect.

from From Greek 'neuron,' meaning 'nerve' (and originally 'sinew' or 'cord'), via the Latinized 'neuralis.' The Greeks used the same word for both nerves and tendons, since both looked like stringy fibers running through the body. The word stayed safely medical until the mid-20th century, when computer scientists borrowed it for 'neural networks' — software that imitates webs of brain cells.