antiparallel
Americanadjective
adjective
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physics parallel but pointing in the opposite direction
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maths (of vectors) parallel but having opposite directions
Etymology
Origin of antiparallel
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Wilson continued, "If those magnetic moments interact in a way that wants them to point antiparallel to one another, we call that antiferromagnetism."
From Science Daily • Mar. 16, 2026
The two strands run antiparallel to each other.
From Textbooks • Jun. 9, 2022
On rare occasions the spins of the protons and electrons in neutral hydrogen atoms flip from being parallel to antiparallel, emitting a photon at a frequency of 1.4 gigahertz—the so-called 21-centimter radiation.
From Science Magazine • Jul. 18, 2019
The spins of the u and d quarks are antiparallel, enabling the pion to have spin zero, as observed experimentally.
From Textbooks • Aug. 12, 2015
Each protomer contributes an intertwined helical pair that bends in a left-handed helical 180° turn over the length of the channel, forming an antiparallel coiled coil in the upper and middle part of the pore.
From Nature • Apr. 4, 2014
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
