Mongolian, a type of feeble-minded individual, see [p. 248].
Monohybrid (Gr. monos, single; L. hybrida, mongrel), the offspring of parents, differing in one character.
Moron (Gr. moros, foolish), defined, [p. 244].
Mutations (L. mutare, to change), abrupt, inheritable germinal variations. Frequently though not necessarily they are changes of considerable extent.
Neural (Gr. neuron, nerve), pertaining to the nervous system.
Neuron (Gr. neuron, nerve), a nerve-unit consisting of a nerve-cell with branching processes called dendrites and an axon or axis cylinder process which gives rise to a nerve fiber.
Neuropathic (Gr. neuron, nerve; pathos, suffering), relating to disease of the nervous system.
Nucleolus (L. dim. of nucleus), a well-defined body found within the nucleus of a cell.
Nucleus (L. nux, a nut), the central organ of a cell.