In referring to a growth, abnormal may mean that it is cancerous or premalignant; that is, likely to become cancer.
Einstein is said to have had an abnormal IQ.2. Descriptive of something that is unusual: An abnormal amount of snow fell in October.
Abnormal can mean either below or above normal, either better or worse than normal; while, "subnormal" always means below or worse than normal.3. Etymology: from anormal which came from the Greek anomalos, "irregular". Later the b was added by analogy with the Latin word for irregular, abnormis, based on Latin ab-, "from" + norma, "norm"; hence "away from the norm".
2. Unusual or unexpected; especially, in a way that causes alarm or anxiety: The abnormal extremes in weather conditions are causing officials to declare mandatory evacuations which is resulting in a great deal of stress for residents in certain areas of the world.
3. Much greater than expected or usual: Abnormal profits might be blamed for the financial crisis that exists these days.
4. Departing from what is typical or is usually expected; for example, in intelligence and physical development: The parents were very distressed when they found out that their daughter was considered to be intellectually abnormal in school.
The abnormal circumstances surrounding Gertrude's decision to travel caused a great deal of concern for her parents.
The neighbor's cat has an abnormal fear of birds.5. Etymology: This word was once spelled anormal and it came from the Greek anomalos, meaning irregular. Later the b was added by analogy with the Latin word for irregular, abnormis from Latin ab-, "from" + norma, "norm"; and so, "away from the norm".
Abnormal can mean either "below normal" or "above normal"; so, either better or worse than normal: Einstein had an abnormal IQ while an ignorant person also has an abnormal IQ. On the other hand, "subnormal" always means below or worse than normal.
Abnormal sensations can result from damage to, or a pressure on, certain nerve pathways.
The most common types of abnormal sensations are tinnitus or numbness and/or feelings as if one is stuck with pins and needles; sometimes combined with pain and even with a feeling of being very cold or of severe burning.