Backpropagation. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/backpropagation
(countable and uncountable, plural backpropagations)
(computing) An error correction technique used in neural networks
(neurology) A phenomenon in which the action potential of a neuron creates a voltage spike both at the end of the axon, as normally, and also back through to the dendrites from which much of the original input current originated.