adjective. 1. all things atypical, unordinary, or considered outside of the norm. 2. in regards to statistics, any data studied that is beyond or beneath the scope of what is normal or predicted.

ABNORMAL: "The graph clearly showed the results of the ninth study were abnormal in comparison to the first eight."
Cite this page: N., Pam M.S., "ABNORMAL," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/abnormal/ (accessed September 16, 2021).