the world > animals > animal body > general parts > body and limbs > [adjective] > having separate digits > having several digits > having three digits
tridigitated1811
tridactyl1812
tridactylous1828
tridigital1881
tridigitate1900
1881 St. G. MivartCat 103 The skeleton of the fore-leg..is divisible into a tri- and a bi-digital series, placed side by side.