noun, plural ab·nor·mal·i·ties.
- an abnormal condition, state, or quality; irregularity; deviation.
- an abnormal thing or event.
noun plural -ties
- an abnormal feature, event, etc
- a physical malformation; deformity
- deviation from the typical or usual; irregularity
“quality of being abnormal,” 1854; “abnormal feature or quality,” 1859, from abnormal + -ity. Earlier as abnormity (1731).
- An anomaly, malformation, or difference from the normal.