bidactyly

bi·dac·ty·ly

(bī-dak'ti-lē), Abnormality in which the medial digits are lacking, with only the first and fifth represented.
See also: lobster-claw deformity, ectrodactyly. [bi- + G. daktylos, finger]

bi·dac·ty·ly

(bī-dak'ti-lē) Abnormality in whichthe medial fingers are lacking, with only the first and fifth represented.
See also: ectrodactyly[bi- + G. daktylos, finger]