opticityn.
/ɒpˈtɪsᵻti/, U.S. /ɑpˈtɪsᵻdi/ Now rare.
The degree of optical activity of a solution, esp. as a measure of its concentration in the brewing and food industries.
ΘΚΠ
the world > food and drink > drink > manufacture of alcoholic drink > brewing > [noun] > degrees of density
attenuation1844
opticity1895
1895 Jrnl. Chem. Soc. 67 309 The well-marked relation which always exists between the opticity and the cupric reducing power of the products of the hydrolysis.
1900 Jrnl. Federated Inst. Brewing 6 219 The pyridine solutions of osazones are..very suitable for determinations of opticity.
1924 J. Grant Chem. of Breadmaking (ed. 4) xiii. 197 Two instruments in common use for the determination of the opticity of sugars and other optically active carbohydrates are the Laurent..and the Schmidt-Haensch.
1996 Jrnl. Structural Chem. 37 137 It is appropriate to determine how the opticity of vibrational bands depends on..the wavelength.
This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022).
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n.1895