Main entry: parallel
Definition: being everywhere equidistant and not intersecting
Usage: parallel lines never converge; concentric circles are parallel; dancers in two parallel rows
Antonyms: perpendicular
Definition: intersecting at or forming right angles
Antonyms: oblique
Definition: slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled
Definition: in a straight unbroken line of descent from parent to child
Main entry: parallel
Definition: of or relating to the simultaneous performance of multiple operations
Usage: parallel processing
Antonyms: diachronic, historical
Definition: used of the study of a phenomenon (especially language) as it changes through time
Antonyms: asynchronous
Definition: not synchronous; not occurring or existing at the same time or having the same period or phase
Antonyms: asynchronous
Definition: (digital communication) pertaining to a transmission technique that does not require a common clock between the communicating devices; timing signals are derived from special characters in the data stream itself