I think this word is bifurcation .Bifurcation means the splitting of a main body into two parts.
Tacos
biofical
1717-swimming paddles for feet and hand 1729-whoopee cushion 1736-the magic squares 1742-the Franklin stove 1749-biofical glasses 1752-experiments with electricity 1755-the long arm 1759-1760-the rocking chair fan 1751-streetlights enacted 1768-the chair-desk 1772-combination locks 1780-calculator 1786-modern calculator