deformity

n. physical distortion, disfigurement, abnormality

A deformity, dysmorphism, or dysmorphic feature is a major difference in the shape of the body a body part, or a body organ (internal or external) compared to the average shape for the part in question.Deformity may arise from numerous causes:A genetic mutationDamage to the fetus or uterusComplications at birthA growth or hormone disorderReconstructive surgery following a severe injury e.g. burn injury.Arthritis and other Rheumatoid disordersIrish Mythology includes the Fomorians, who are almost without exception described as being deformed, possessing only one of what most have two of (eyes, arms, legs, etc.) or having larger than normal limbs. Other mythological creatures may have been created due to a deformative syndrome also, for instance, descriptions of  mermaids may be related to the symptoms of sirenomelia.
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Deformity /de·form·i·ty/ distortion of any part or of the body in general. Åkerlund deformity an indentation in the duodenal cap in the radiograph [more]Deformity - Community and Resources

Noun
1. an affliction in which some part of the body is misshapen or malformed
(synonym) malformation, misshapenness
(hypernym) affliction
(hyponym) Arnold-Chiari deformity
2. an appearance that has been spoiled or is misshapen; "there were distinguishing disfigurements on the suspect's back"; "suffering from facial disfiguration"
(synonym) disfigurement, disfiguration
(hypernym) appearance, visual aspect

(a.)
The state of being deformed; want of proper form or symmetry; any unnatural form or shape; distortion; irregularity of shape or features; ugliness.
  

(a.)
Anything that destroys beauty, grace, or propriety; irregularity; absurdity; gross deviation from order or the established laws of propriety; as, deformity in an edifice; deformity of character.