Convoluted.
Coiled such that one edge is inside, and one outside the coil, giving a spiral effect in cross section.
To confuse, mix up (something) with something else.
To make unnecessarily complex.
To fold or coil into numerous overlapping layers.
Intricate, involved, entangled, complicated, complex.
A genealogical coefficient of a given genealogical tree; defined as the difference between the number of theoretical ancestors of a person and the number of his/her real ones in a given generation (the degree of pedigree collapse).