| Antiparallels | n. pl. (Geom.) Straight lines or planes which make angles in some respect opposite in character to those made by parallel lines or planes. [ 1913 Webster ] |
| Antiparallel | a. Running in a contrary direction. Hammond. [ 1913 Webster ] |
| antiparallel | ขนานสวน [คณิตศาสตร์๑๙ ก.ค. ๒๕๔๗] |
| Antiparallel | ทิศทางตรงกันข้าม, แอนตี้พาราเลล [การแพทย์] |
| antiparallel | (adj) (especially of vectors) parallel but oppositely directed, Example: antiparallel vectors |