The quality of being exceptional; the state of being unusual, rare, or surpassing ordinary limits.
From 'exceptional' + '-ity' suffix. Modern formation from Latin 'exceptio' through the English adjective 'exceptional.'
Psychologists and educators use 'exceptionality' as a formal term for giftedness or developmental differences—it's the polite academic word for students who fall outside normal ranges.
Complete word intelligence in one call. Free tier — 50 lookups/day.