hyperdactylia

[ hahy-per-dak-til-ee-uh ]
/ ˌhaɪ pər dækˈtɪl i ə /

noun

the presence of extra fingers or toes.

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Also hy·per·dac·tyl·ism [hahy-per-dak-tl-iz-uhm], /ˌhaɪ pərˈdæk tlˌɪz əm/, hy·per·dac·ty·ly [hahy-per-dak-tl-ee]. /ˌhaɪ pərˈdæk tl i/.

Origin of hyperdactylia

1900–05; hyper- + New Latin -dactylia-dactyly
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020