(of vectors) parallel but having opposite directions
antiparallel in American English
(ˌæntaɪˈpærəˌlɛl; ˌæntiˈpærəˌlɛl; ˌæntɪˈpærəˌlɛl)
adjective
designating vectors that are parallel but opposite in direction
antiparallel in American English
(ˌæntiˈpærəˌlel, ˌæntai-)
adjective
Math & Physics(of two vectors)
pointing in opposite directions
Word origin
[1650–60; anti- + parallel]This word is first recorded in the period 1650–60. Other words that entered Englishat around the same time include: backhand, gas, oscillation, parade, siphonanti- is a prefix meaning “against,” “opposite of,” “antiparticle of,” used in the formationof compound words (anticline); used freely in combination with elements of any origin (antibody; antifreeze; antiknock; antilepton)
Examples of 'antiparallel' in a sentence
antiparallel
Firstly, the antiparallel freewheeling diodes at the arms of full-bridge circuit are taken into account.
Lele Yao, Donghui Li, Lingling Liu 2018, 'An improved power loss model of full-bridge converter under light load condition',PLOS ONE10.1371/journal.pone.0208239. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Adjacent columns lie antiparallel to each other.
Olga Yu. Vassilyeva, Katerina V. Kasyanova, Vladimir N. Kokozay, Brian W. Skelton 2018, 'Crystal structure of dichloridobis{μ-2-methoxy-6-[(methylimino)methyl]phenolato}{2-methoxy-6-[(methylimino)methyl]phenolato}cadmium(II)cobalt(III)monohydrate', Acta Crystallographica Section E: Crystallographic Communicationshttp://scripts.iucr.org/cgi-bin/paper?S2056989018013610. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The two bridged naphthyridine ring systems are in an antiparallel orientation.
Shou-Wen Jin, Da-Qi Wang, Yun Chen 2008, '7-[4-(5,7-Dimethyl-1,8-naphthyridin-2-yloxy)phenoxy]-2,4-dimethyl-1,8-naphthyridinemethanol disolvate', Acta Crystallographica Section Ehttp://scripts.iucr.org/cgi-bin/paper?S160053680706549X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Three antiparallel beta sheets were found to be preserved.
Adriana M. Namba, Léo Degrève 2004, 'Estudo da estrutura e da solvatação do HNP-3, um antibiótico natural, por dinâmicamolecular Study of the structure and solvation of the HNP-3, a natural antibiotic,by molecular dynamics', Química Novahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000100006. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The antiparallel aspect also appeared in colchicinized cells.
Beçak Maria Luiza, Beçak Willy, Pereira Alexandre 2003, 'Somatic pairing, endomitosis and chromosome aberrations in snakes (Viperidae and Colubridae)',Anais da Academia Brasileira de Ciênciashttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652003000300004. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
By contrast, thanatin in free solution assumed an antiparallel β-hairpin conformation.
Sheetal Sinha, Liangzhen Zheng, Yuguang Mu, Wun Jern Ng, Surajit Bhattacharjya 2017, 'Structure and Interactions of A Host Defense Antimicrobial Peptide Thanatin in LipopolysaccharideMicelles Reveal Mechanism of Bacterial Cell Agglutination', Scientific Reportshttp://link.springer.com/article/10.1038/s41598-017-18102-6. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Conversely, electric dipole moments of monomers tend to align in antiparallel associations.
Angel Mozo-Villarías, Juan Cedano, Enrique Querol 2014, 'A model of protein association based on their hydrophobic and electric interactions.',PLoS ONEhttp://europepmc.org/articles/PMC4201486?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
An antiparallel purine-motif triplex was detected using electrophoretic mobility shift assay.
Tea Umek, Karin Sollander, Helen Bergquist, Jesper Wengel, Karin E. Lundin, C.I. EdvardSmith, Rula Zain 2019, 'Oligonucleotide Binding to Non-B-DNA in MYC', Moleculeshttp://www.mdpi.com/1420-3049/24/5/1000. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The topology allows three sources to utilize the antiparallel diodes for each inverter leg for transferring the energy.
Eltaib Abdeen, Mahmoud A. Gaafar, Mohamed Orabi, Emad M. Ahmed, Abdelali El Aroudi 2019, 'Multi-Input Ćuk-Derived Buck-Boost Voltage Source Inverter for Photovoltaic Systemsin Microgrid Applications', Energieshttps://www.mdpi.com/1996-1073/12/10/2007. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The 4-phenoxybenzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost antiparallel.
Sayaka Yoshiwaka, Daichi Hijikata, Kosuke Sasagawa, Akiko Okamoto, Noriyuki Yonezawa 2013, '[8-(4-Phenoxybenzoyl)-2,7-bis(propan-2-yloxy)naphthalen-1-yl](4-phenoxyphenyl)methanone',Acta Crystallographica Section Ehttp://scripts.iucr.org/cgi-bin/paper?S1600536813000913. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)