Antonyms of adj nonparallel

2 senses of nonparallel

Sense 1
serial, in series (predicate), nonparallel -- (of or relating to the sequential performance of multiple operations; "serial processing")

INDIRECT (VIA asynchronous) -> synchronous, synchronal, synchronic -- (occurring or existing at the same time or having the same period or phase; "recovery was synchronous with therapy"- Jour.A.M.A.; "a synchronous set of clocks"; "the synchronous action of a bird's wings in flight"; "synchronous oscillations")

Sense 2
nonparallel -- ((of e.g. lines or paths) not parallel; converging)

INDIRECT (VIA perpendicular, oblique) -> parallel -- (being everywhere equidistant and not intersecting; "parallel lines never converge"; "concentric circles are parallel"; "dancers in two parallel rows")
INDIRECT (VIA oblique, parallel) -> perpendicular -- (intersecting at or forming right angles; "the axes are perpendicular to each other")

Similarity of adj nonparallel

2 senses of nonparallel

Sense 1
serial, in series (predicate), nonparallel -- (of or relating to the sequential performance of multiple operations; "serial processing")
       => asynchronous (vs. synchronous) -- (not synchronous; not occurring or existing at the same time or having the same period or phase)

Sense 2
nonparallel -- ((of e.g. lines or paths) not parallel; converging)
       => oblique (vs. parallel) (vs. perpendicular) -- (slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled; "the oblique rays of the winter sun"; "acute and obtuse angles are oblique angles"; "the axis of an oblique cone is not perpendicular to its base")