syndactyly
noun
syn·dac·ty·ly
(ˌ)sin-ˈdak-tə-lē 
: a union of two or more digits that is normal in some animals (such as various marsupials) and that in humans occurs as an inherited condition or as a part of several genetic disorders and is marked by webbing of two or more fingers or toes and sometimes bony fusion of adjacent digits
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The same may be true of developmental disorders — like syndactyly.
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Natalie Angier, New York Times, 9 Jan. 2017
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Natalie Angier, New York Times, 9 Jan. 2017
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“Syndactyly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/syndactyly. Accessed 22 Jul. 2025.
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syndactyly
noun
syn·dac·ty·ly
-lē
plural syndactylies
: a union of two or more digits that is normal in some animals and that in humans occurs as an inherited condition or as a part of several genetic disorders and is marked by webbing of two or more fingers or toes and sometimes bony fusion of adjacent digits
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