Short form of neurodivergent. Of a mind whose workings differ from what a society built for.
A late-twentieth-century compound: Greek neuron (sinew, nerve) and Latin divergere (to turn aside, to branch away); of a mind whose workings differ from what a society was built for, clipped to its two initials.
Two letters carrying an identity — a mind whose wiring was never what the surrounding world was built to expect.