Antiparallel
adj, noun ·Rare ·Advanced level
Definitions
- 1 A line that forms equal angles with two other lines, but in opposite directions.
- 1 (of vectors) Parallel but in opposite directions.; Describing the orientations of the two strands of DNA. not-comparable
"Upon interaction with ss- nucleic acid (NA) targets (deoxyribooligonucleotides (ODNs) or ribooligonucleotides), they form very stable anti-parallel and parallel duplexes [3 ], and the melting temperatures of the antiparallel duplexes are 10 to 15°C higher than those of the parallel duplexes."
- 2 (of vectors) Parallel but in opposite directions.; Describing two beta strands comprising a protein's secondary structure that are aligned and hydrogen bonded but where the vectors describing the amino- and carboxy-terminal ends of each strand are oriented 180° relative to one another. not-comparable
- 1 (especially of vectors) parallel but oppositely directed wordnet
Synonyms
All synonymsAntonyms
All antonymsExample
More examples"Upon interaction with ss- nucleic acid (NA) targets (deoxyribooligonucleotides (ODNs) or ribooligonucleotides), they form very stable anti-parallel and parallel duplexes [3 ], and the melting temperatures of the antiparallel duplexes are 10 to 15°C higher than those of the parallel duplexes."
Etymology
From anti- + parallel.
Related phrases
More for "antiparallel"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.