hyperphalangism

noun
hy·​per·​pha·​lan·​gism | \ -fə-ˈlan-ˌjiz-əm How to pronounce hyperphalangism (audio) , -fā-ˈ How to pronounce hyperphalangism (audio) \

Medical Definition of hyperphalangism

: the presence of supernumerary phalanges in fingers or toes

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