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antiparallel

antiparallel

8.7
Lines or arrows that run alongside each other but point in opposite directions
  • adjective
  • /ˌæntiˈpærəˌlɛl/
  • Specialized
translation icon : antiparalelo
  • The robots worked in antiparallel motion, with one moving forward while the other moved backward.
  • antiparallel spins
  • parallel and antiparallel

Examples

  • It idled past the football field and roared in an antiparallel direction to the vehicles coming out of McDonald's.

    Blog text (34)
  • In today's GMR devices, the magnetoresistance, defined as the percentage difference in resistance between the parallel and antiparallel configurations, is around 10-15%.

    Academic text (2004)
  • When the two moments are antiparallel, however, the resistance is higher.

    Academic text (2004)
  • That can happen when antiparallel field lines are pressed together, which leads to magnetic reconnection.

    Academic text (2002)
  • For example, in the study of p reactions, one can produce initial states with spin 3/2 or, depending on whether the photon's spin is aligned parallel or antiparallel to the spin of the proton.

    Academic text (2005)
  • This molecule can flip between two states, with the line from the carbon to the oxygen atom either parallel or antiparallel to the molecule's angular momentum vector.

    Academic text (2001)
  • Those spins may be characterized by helicity—positive if spin and momentum are parallel, negative if they are antiparallel.

    Academic text (2004)
  • He realized he could do so by measuring the signs of the atomic moments in states for which the nuclear and atomic spins were antiparallel; he also realized that atoms with antiparallel spins could be identified by observing the transitions induced by passing the atoms through a magnetic field whose direction changed as a function of position.

    Academic text (1993)
  • He realized he could do so by measuring the signs of the atomic moments in states for which the nuclear and atomic spins were antiparallel; he also realized that atoms with antiparallel spins could be identified by observing the transitions induced by passing the atoms through a magnetic field whose direction changed as a function of position.

    Academic text (1993)
  • The two arrows were drawn as antiparallel lines, pointing in opposite directions on the graph.

Synonyms

opposite
vsantiparallel
199 1.0

Facing each other or arranged in matching pairs on each side

describes parallel lines pointing the other way rather than mere location
contrary
vsantiparallel
5 4.3

Moving in the opposite direction

describes lines or vectors that are parallel but point in opposite directions

Antonyms

parallel
  • Specialized
80 3.2

Lines, planes, or flat surfaces that stay the same distance apart and never meet

Surface Forms

antiparallel positive

Morphology

antiparallel = parallel (transparent) = anti + parallel

The meaning is directly compositional: 'anti-' contributes opposition and 'parallel' supplies the base geometric relation.

Etymology

The word antiparallel combines anti- meaning 'opposite' and parallel meaning 'side by side'. So imagine two roads running next to each other but going in opposite directions; that's what antiparallel means for lines or vectors.