Nasmyth's membranen.

Brit.

/ˌneɪsmɪθs ˈmɛmbreɪn/, U.S.

/ˈneɪˌsmɪθs ˈmɛmˌbreɪn/

Origin: From a proper name, combined with an English element. Etymons: proper name Nasmyth , membrane n.

Etymology: < the genitive of the name of Alexander Nasmyth (d. 1848), British dentist, who described the membrane in 1839 ( Medico-Chirurg. Trans. 22 312) + membrane n.

Anatomy.

A transient membrane covering the crown of a newly erupted tooth; the primary enamel cuticle.

ΘΚΠ

the world > life > the body > digestive or excretive organs > digestive organs > mouth > substance or parts of teeth > [noun] > membranes or connective tissue

Nasmyth's membrane1853

peridenteum1859

periodontium1876

Sharpey's fibre1890

1853 Q. Jrnl. Microsc. Sci. 1 162 The layer is about 1-40th of an inch thick, and consists of an external delicate structureless Nasmyth's membrane.

1906 Brit. Dental Jrnl. 27 1017 The interest at the time was centred on the condition of its Nasmyth's membrane.

1928 Proc. Royal Soc. 102 420 Further possible sources of error occurred to us:—(v) The possible presence of Nasmyth's membrane on the enamel examined.

1994 Caries Res. 28 83 The surface organic material (Nasmyth's membrane) was left intact in group I.

This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).

单词	nasmyths membrane
释义	Nasmyth's membranen. Brit. /ˌneɪsmɪθs ˈmɛmbreɪn/, U.S. /ˈneɪˌsmɪθs ˈmɛmˌbreɪn/ Origin: From a proper name, combined with an English element. Etymons: proper name Nasmyth , membrane n. Etymology: < the genitive of the name of Alexander Nasmyth (d. 1848), British dentist, who described the membrane in 1839 ( Medico-Chirurg. Trans. 22 312) + membrane n. Anatomy. A transient membrane covering the crown of a newly erupted tooth; the primary enamel cuticle. ΘΚΠ the world > life > the body > digestive or excretive organs > digestive organs > mouth > substance or parts of teeth > [noun] > membranes or connective tissue Nasmyth's membrane1853 peridenteum1859 periodontium1876 Sharpey's fibre1890 1853 Q. Jrnl. Microsc. Sci. 1 162 The layer is about 1-40th of an inch thick, and consists of an external delicate structureless Nasmyth's membrane. 1906 Brit. Dental Jrnl. 27 1017 The interest at the time was centred on the condition of its Nasmyth's membrane. 1928 Proc. Royal Soc. 102 420 Further possible sources of error occurred to us:—(v) The possible presence of Nasmyth's membrane on the enamel examined. 1994 Caries Res. 28 83 The surface organic material (Nasmyth's membrane) was left intact in group I. This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022). < n.1853
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