nonparallel adj. 1. not parallel; -- of lines or linear objects. Opposite of parallel. [Narrower terms: bias, catacorner, cata-cornered, catercorner, cater-cornered, catty-corner, catty-cornered, diagonal, kitty-corner, kitty-cornered, oblique, skew, skewed, slanted ; crossed, decussate, intersectant, intersecting; cross-grained ; diagonal; orthogonal, orthographic, rectangular, right-angled ; right, perpendicular; angled ; convergent] Also See: convergent, divergent, diverging.[WordNet 1.5]
2. (Computers) Not using parallel processing; -- of computers. [Narrower terms: serial] PJC]