Found 2 items, similar to antiparallel.
English → English (WordNet) Definition: antiparallel antiparallel adj : (especially of vectors) parallel but oppositely directed; “antiparallel vectors”
English → English (gcide) Definition: Antiparallel Antiparallel \An`ti*par"al*lel\, a. Running in a contrary direction. --Hammond. [1913 Webster]