antiparallel


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an·ti·par·al·lel

(an'tē-par'ă-lel),
1. Denoting molecules that are parallel but have opposite directional polarity, for example, the two strands of a DNA double helix.
2. Denoting the spins of two electrons occupying the same orbital area but with different spin quantum numbers.
Farlex Partner Medical Dictionary © Farlex 2012

antiparallel

(ăn′tē-păr′ə-lĕl′, ăn′tī-)
adj.
Of or relating to two adjacent molecules whose sequences of atoms or other elements run in opposite directions: antiparallel strands of DNA.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

antiparallel

Of two structures that lie parallel to each other but that run in opposite directions. The best-known example of antiparalellism is that of the two strands in the DNA molecule.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
The four antiparallel diode power dissipations, da1, da2, da3, and da4, are also identical.
For time lag [tau] = 4, antiparallel streams (red (b)) outnumber the parallel ones.
Two Neel DWs are formed, whereby the magnetization within the center of the GB is antiparallel to one of the adjacent grains, until being at a high external field value of 6.45 T (Figure 17(2)).
As expected, both C2 domains present a [beta]-sandwich fold (Figures 6(b) and 6(c)), composed of 8 antiparallel p sheets along with the predicted helix.
Snubber circuits may also need to be employed to improve the reverse recovery characteristics of the antiparallel diodes.
In this case, the inductor is energized by the current through the drain-source path of [S.sub.1a] and the antiparallel diode of [S.sub.1]b.
* C terminal--double hairpin structure, a minor antiparallel beta sheet and the third disulphide bond.
Among our observations, particularly striking was the accumulation of centralspindlin on antiparallel bundles of overlapping astral microtubules that accompany the ingressing cleavage furrow.
Similar results were obtained for tests of the common configuration of a high breakdown-voltage MOSFET co-packaged with an antiparallel diode--an architecture useful for motor control and power conversion circuits to improve switching performance.
According to its different orientation of micro fibrils there are three forms chitin; a chitin has antiparallel chains, [alpha] chitin has parallel chains and a chain has the mixture of parallel and antiparallel chains (7).
Those materials in which magnetic moments of equal magnitude arranged in antiparallel form are called anti-ferromagnetism.
The antiparallel combination of a SiC Schottky diode (the reason for using SiC instead of Si is described in [14]) IDW20S120 and high speed diode-less IGBT transistors IGW40N120H3 was chosen to overcome this drawback.