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(Chemistry) (of two different molecules) having the same number of atoms and the same number and configuration of valency electrons, as carbon dioxide and nitrous oxide
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌaɪ səˈstɛr ɪk)

having the same number of valence electrons in the same configuration but differing in the kinds and numbers of atoms.
[1860–65; iso- + Greek ster(eós) solid + -ic]
i•sos′ter•ism, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Another important thermodynamic parameter that provides relevant information about the heat exchanges in the adsorption process is the isosteric adsorption heat ([DELTA][H.sub.x]), defined as the standard adsorption enthalpy change for a constant amount of adsorbate [29].
Water adsorption isotherms and isosteric sorption heat of spray-dried and freeze-dried dehydrated passion fruit pulp with additives and skimmed milk.
Adsorption thermodynamics, kinetics and isosteric heat of adsorption of malachite green onto chemically modified rice husk, Desalination 265: 159-168.
In addition, they are useful intermediates for preparing novel conducting polymers and nonlinear optical materials as well as for isosteric replacement of phenyl groups in medicinal chemistry [5-7].
Saha et al., "Adsorption thermodynamics, kinetics and isosteric heat of adsorption of malachite green onto chemically modified rice husk," Desalination, vol.
From the temperature dependence of the sorption isotherms, the isosteric heat of sorption was calculated.
Nodzenski [21] calculated the isosteric heats of sorption methane and carbon dioxide on hard coal using the thermal sorption equation of the virial form.
[E]ven a change as seemingly trivial as replacing an isopropyl group with the isosteric cyclopropyl group ...
The heteroatoms in the policyclic skeleton must be oxygen atoms, since all isosteric substitutions led to poorly active or inactive compounds ("thio series" 14-18, "FQ series" 17-19, and "triazole series" 31).