The term antiparallel may refer to: *

Antiparallel (biochemistry) In biochemistry, two biopolymers are antiparallel if they run parallel (geometry), parallel to each other but with opposite directionality (molecular biology), directionality (alignments). An example is the two complementarity (molecular biology), ...

, the orientation of adjacent molecules * Antiparallel lines, a congruent but opposite relative orientation of two lines in relation to another line or angle * Antiparallel vectors, a pair of vectors pointed in opposite directions * Antiparallel (electronics), the polarity of devices run in parallel

See also