ionotropyn.1
/ʌɪəˈnɒtrəpi/, U.S. /aɪəˈnɑtrəpi/ 1. Chemistry. Tautomerism or tautomeric change, regarded as occurring through the detachment of an ion from the molecule concerned followed by a redistribution of the charge in the resulting molecular ion and reattachment of the ion to a different part of it.
ΘΚΠ
the world > matter > chemistry > isomerism > [noun] > structural isomerism > tautomerism
tautomerism1888
tautomery1896
ionotropy1928
1928 Ann. Rep. Progr. Chem. 1927 24 107 Lowry has also used the word ‘ionotropy’.
1955 Chem. Abstr. 49 40 Reactions of acids and bases can be described by assuming the fundamental reaction of ‘ionotropy’.
1973 Nature 26 Oct. 430/2 They could then have..included topics such as tautomerism, ionotropy, radical rearrangements and a few more specific reactions.
1986 E. A. M. F. Dahmen Electroanalysis iv. 231 This can best be done by dividing the theory of the solutions concerned into two parts, viz. (1) the exchange of ionic particles (ionotropy), which leads to acid–base systems, and (2) the exchange of electrons only, which leads to redox systems.
2. Physical Chemistry. The ordering of particles in a gel that results when an electrolyte is added to a colloidal suspension.
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the world > matter > chemistry > physical chemistry > colloid > [noun] > gel > assoc. processes
synaeresis1864
ionotropy1949
1949 Chem. Abstr. 43 4539 Usually the sign of the ionotropy is the same as that of flow anisotropy.
1990 M. C. Porter Handbk. Industr. Membrane Technol. ii. 66 Many techniques have been proposed for making capillary-pore membranes including laser beams, electroforming, photochemical etching, and ionotropy to orient anisotropic gel particles.
2010 Talanta 82 1172/1 When Ca2+ was added..the random coils structure of alginate chains was changed to the ordered ribbon-like structure due to the ionotropy effect between Ca2+ and Na+.
This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).
ionotropyn.2
/ʌɪəˈnɒtrəpi/, U.S. /aɪəˈnɑtrəpi/ Physiology.
= inotropy n.
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the world > life > the body > structural parts > muscle > [noun] > muscular tension
contraction1615
tonicity1824
myonicity1866
tonus1876
inotropism1902
ionotropy1976
stiffness1978
1976 Med. Hypotheses 2 61/1 Due to a decreased sympathetic drive, and hence ionotropy, the Starling length-tension mechanism would then be the only source of augmented stroke volume.
1985 Amer. Heart Jrnl. 109 1284/2 Data..suggested that H2 receptors did exist in the heart, and when stimulated, these might increase chronotropy and ionotropy.
2010 B. E. Kaufman in A. Chila & M. Fitzgerald Found. Osteopathic Med. (ed. 3) lv. 896/1 Under states of increased sympathetic tone, the body experiences increased heart rate (chronotropy), increased force of contraction (ionotropy), vasoconstriction, and elevated blood pressure.
This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022).
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n.11928n.21976- for sake
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