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
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 two strands of DNA’s double helix run antiparallel, or in opposite directions.
From Textbooks ● Jan. 1, 2018
The homology models of KBTBD4Kelch adopt the six-bladed β-propeller fold with each ‘blade’ formed by a four-stranded antiparallel β-sheet.
From Nature ● Jul. 18, 2017
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
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.
