Xen.
/ˌɛksˈiː/, U.S. /ˌɛksˈi/ Chemistry.
The element xenon.
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xenon1898
Xe1900
1900 G. Rudorf Periodic Classif. i. vi. 151 (table) Xe.
1942 J. D. Stranathan ‘Particles’ of Mod. Physics v. 167 Those elements with the greatest number of stable isotopes are Sn with 10 and Xe with 9.
1991 Nucl. Energy June 153/1 Throughout this work the assumption is made that the only fission product species which participate in pressurization are the noble gases Kr and Xe.
2008 Proc. National Acad. Sci. U.S.A. 105 18709/1 The crystal thermal expansion resembles that of van der Waals solids (e.g., Xe) more strongly than typical framework materials.
This is a new entry (OED Third Edition, March 2012; most recently modified version published online December 2021).
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n.1900