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noun, plural ab·nor·mal·i·ties.
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).
n.
- An anomaly, malformation, or difference from the normal.