the resemblance of a crystal to an order to which it does not belong
pseudosymmetry in American English
(ˌsuːdouˈsɪmɪtri)
noun
Crystallography
an apparent symmetry different from that appropriate to a crystal of a given mineral
Word origin
[1885–90; pseudo- + symmetry]This word is first recorded in the period 1885–90. Other words that entered Englishat around the same time include: classified, reactor, retread, scrum, twoferpseudo- is a combining form meaning “false,” “pretended,” “unreal,” used in the formationof compound words (pseudoclassic; pseudointellectual); in scientific use, pseudo- denotes close or deceptive resemblance to the following element (pseudobulb; pseudocarp), and is used sometimes in chemical names of isomers (pseudoephedrine)
Examples of 'pseudosymmetry' in a sentence
pseudosymmetry
The fold has internal pseudosymmetry, raising the possibility that it arose by duplication of a subdomain-sized fragment.
Andrei N Lupas, Hongbo Zhu, Mateusz Korycinski 2015, 'The thalidomide-binding domain of cereblon defines the CULT domain family and is anew member of the β-tent fold.', PLoS Computational Biologyhttp://europepmc.org/articles/PMC4287342?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The structure exhibits pseudosymmetry but attempts to solve it in a higher (monoclinic) space group were unsuccessful.
G. Gangadhararao, Srinivas Venu 2011, 'The Phospha–Michael addition product {(t-BuNH)P(μ-N-t-Bu)2P(=N-t-Bu)—C(=CH2)CH(p-CH3O—C6H4)-P(O)[(OCH2C(CH3)2CH2O)]}',Acta Crystallographica Section Ehttp://scripts.iucr.org/cgi-bin/paper?S1600536811014127. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
These molecules are related by pseudosymmetry.
Julian Radtke, Hans-Wolfram Lerner, Michael Bolte 2019, 'Polymorphism and pseudosymmetry of 10,10′-oxybis(9-thia-10-hydro-10-boraanthracene)',Acta Crystallographica Section E: Crystallographic Communicationshttp://scripts.iucr.org/cgi-bin/paper?S205698901900522X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)