ANTIPARALLEL

antiparallel

(adjective) (especially of vectors) parallel but oppositely directed; “antiparallel vectors”

Source: WordNet® 3.1


Etymology

Adjective

antiparallel (not comparable)

(mathematics) of vectors, parallel but of opposite direction

(biochemistry) describing the orientations of the two strands of DNA

(biochemistry) 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.

Noun

antiparallel (plural antiparallels)

(geometry) A line that forms equal angles with two other lines, but in opposite directions.

Source: Wiktionary


An`ti*par"al*lel, a.

Definition: Running in a contrary direction. Hammond.

Source: Webster’s Unabridged Dictionary 1913 Edition



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