'abnormal-fingered' originates from the combination of 'abnormal' and 'fingered', where 'abnormal' means 'not normal' and 'fingered' refers to having fingers.

The term 'abnormal-fingered' combines the adjective 'abnormal' with the past participle 'fingered', forming a descriptive adjective.

Initially, it meant 'having fingers that deviate from the norm', and this meaning has largely remained the same in modern usage.