Neurotypical or NT, an abbreviation of neurologically typical, is a neologism originating in the autistic community as a label for people who are not on the autism spectrum. However, the term eventually became used for anyone who does not have atypical neurology. In other words, this refers to anyone who does not have conditions such as autism, dyslexia, developmental coordination disorder, or ADD/ADHD. The term was later adopted by both the neurodiversity movement and the scientific community. Neurotypical has been replaced by some with "allistic", or "nypical" which has the same meaning as "neurotypical" did originally.
^Hare, D. J.; Jones, S.; Evershed, K. (November 2006). "A comparative study of circadian rhythm functioning and sleep in people with Asperger syndrome". Autism10 (6): 565–575. doi:10.1177/1362361306068509. PMID17088273.