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
Figure 3.34 Native DNA is an antiparallel double helix.
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 two strands of DNA’s double helix run antiparallel, or in opposite directions.
From Textbooks • Jan. 1, 2018
Class 6 contains antiparallel, face-to-back, up–up structures; class 7 contains antiparallel, face-to-face up–down structures; and, class 8 contains antiparallel, face-to-face, up–down structures.
From Nature • Nov. 8, 2016
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.
