antiparallel(redirected from Anti parallel)
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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.
antiparallel/an·ti·par·al·lel/ (-par´ah-lel) denoting molecules arranged side by side but in opposite directions.
Of or relating to two adjacent molecules whose sequences of atoms or other elements run in opposite directions: antiparallel strands of DNA.
Etymology: Gk, anti + parallelos, side-by-side
pertaining to molecules, such as strands of DNA, that are parallel but are oriented in opposite directions.