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ectrodactylism

[ek-troh-dak-tuh-liz-uh m]
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noun Medicine/Medical.
  1. the congenital absence of part or all of one or more fingers or toes.
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Also ec·tro·dac·tyl·i·a [ek-troh-dak-til-ee-uh, -til-yuh] /ˌɛk troʊ dækˈtɪl i ə, -ˈtɪl yə/, ec·tro·dac·ty·ly [ek-troh-dak-tuh-lee] /ˌɛk troʊˈdæk tə li/.

Origin of ectrodactylism

1880–85; < Greek éktrō(sis) miscarriage (ektrō-, base of ektitrṓskein to miscarry + -sis -sis) + -dactyl + -ism
Related formsec·tro·dac·ty·lous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018