bipartite (adj.)

"in two parts, having two corresponding parts," 1570s, from Latin bipartitus "divided," past participle of bipartire "to divide into two parts," from bi- "two" (see bi-) + partitus, past participle of partiri "to divide" (from pars "a part, piece, a share," from PIE root *pere- (2) "to grant, allot"). Related: Bipartition.