ectrodactylism

/ek-troh-dak-tuh-liz-uhm/US // ˌɛk troʊˈdæk təˌlɪz əm //

外八字,外八字诀,外八卦,外八股

Definitions

n.名词 noun

1
Medicine/Medical.
- : the congenital absence of part or all of one or more fingers or toes.