Definitions for arachnodactyly
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Wiktionary
arachnodactyly(Noun)
a condition in which the fingers and hands are abnormally long and slender
U.S. National Library of Medicine
Arachnodactyly
An abnormal bone development that is characterized by extra long and slender hands and fingers, such that the clenched thumb extends beyond the ulnar side of the hand. Arachnodactyly can include feet and toes. Arachnodactyly has been associated with several gene mutations and syndromes.
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