polydispersityn.

Brit.

/ˌpɒlɪdᵻˈspəːsᵻti/, U.S.

/ˌpɑlidəˈspərsədi/

Origin: Formed within English, by derivation; perhaps modelled on a Dutch lexical item. Etymons: polydisperse adj., -ity suffix.

Etymology: < polydisperse adj. + -ity suffix, perhaps after Dutch polydispersiteit (see note). Compare German Polydispersität (1946 or earlier).Dutch polydispersiteit is apparently only attested later than the current word (1943 or earlier). However, it is possible that the Dutch word appears in the (unpublished manuscript) source of the passage translated in quot. 1927, but this cannot be verified.

Physical Chemistry.

The condition or property of being polydisperse; a measurement of this.

ΘΚΠ

the world > matter > chemistry > physical chemistry > colloid > [noun] > polydispersity

polydispersity1927

1927 H. S. van Klooster tr. H. R. Kruyt Colloids x. 154 Viewed in the ultramicroscope, this sol presents a very colorful picture which reveals the poly-dispersity very plainly.

1976 H.-G. Elias in K. Solc Order in Polymer Solutions 218 The problem on [sic] how the polymolecularity of the unimers influences the polydispersity of the multimers has been solved recently.

1990 Y. Doi Microbial Polyesters v. 91 The molecular weight distributions of the copolymers were unimodal, and their polydispersities (M_w/M_n) were in the 1.7–2.9 range.

2001 Proc. National Acad. Sci. U.S.A. 98 12897/1 Polydispersity (nonspecific aggregation) can be detected by using dynamic light scattering.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polydispersity
释义	polydispersityn. Brit. /ˌpɒlɪdᵻˈspəːsᵻti/, U.S. /ˌpɑlidəˈspərsədi/ Origin: Formed within English, by derivation; perhaps modelled on a Dutch lexical item. Etymons: polydisperse adj., -ity suffix. Etymology: < polydisperse adj. + -ity suffix, perhaps after Dutch polydispersiteit (see note). Compare German Polydispersität (1946 or earlier).Dutch polydispersiteit is apparently only attested later than the current word (1943 or earlier). However, it is possible that the Dutch word appears in the (unpublished manuscript) source of the passage translated in quot. 1927, but this cannot be verified. Physical Chemistry. The condition or property of being polydisperse; a measurement of this. ΘΚΠ the world > matter > chemistry > physical chemistry > colloid > [noun] > polydispersity polydispersity1927 1927 H. S. van Klooster tr. H. R. Kruyt Colloids x. 154 Viewed in the ultramicroscope, this sol presents a very colorful picture which reveals the poly-dispersity very plainly. 1976 H.-G. Elias in K. Solc Order in Polymer Solutions 218 The problem on [sic] how the polymolecularity of the unimers influences the polydispersity of the multimers has been solved recently. 1990 Y. Doi Microbial Polyesters v. 91 The molecular weight distributions of the copolymers were unimodal, and their polydispersities (M_w/M_n) were in the 1.7–2.9 range. 2001 Proc. National Acad. Sci. U.S.A. 98 12897/1 Polydispersity (nonspecific aggregation) can be detected by using dynamic light scattering. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1927
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