AskDefine | Define antiparallel

Dictionary Definition

antiparallel adj : (especially of vectors) parallel but oppositely directed; "antiparallel vectors"

User Contributed Dictionary



  1. of vectors, parallel but of opposite direction
  2. describing the orientations of the two strands of DNA
  3. describing two beta strands comprising a protein's secondary structure that are aligned and hydrogen bonded but the vector describing the amino- and carboxy-terminal ends of each strand are oriented 180° relative to one another.


*Swedish: antiparallell

Extensive Definition

The term antiparallel may refer to:
antiparallel in Dutch: Antiparallel
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