▪ I. Müller, n.3 Min.
(ˈm{smY}lə(r))
Also Muller.
[f. the surname (supposedly of its discoverer).]
Müller's glass (also † Müller glass, † glass of Müller): = hyalite.
| 1794 Müller's Glass [see hyalite]. 1836 T. Thomson Outl. Min., Geol. I. 73 Hyalite or Muller glass. 1852 Glass of Muller [see hyalite]. 1940 G. F. H. Smith Gemstones (ed. 9) xxxii. 302 Hyalite, sometimes called Muller's glass after its discoverer, is a remarkable opal which is as clear as glass. 1962 R. Webster Gems I. x. 186 Hyalite is a colourless transparent variety of opal that closely resembles melted glass; it is sometimes called Müller's glass. |
▪ II. Müller, n.4 Anat.
(ˈm{smY}lə(r))
The name of Heinrich Müller (1820–64), German anatomist, used attrib., in the possessive, and with of-adjunct to designate various anatomical structures of the eye which he described, as: a. Neuroglial cells, having the appearance of fibres, which form the supportive ground tissue of the retina.
| 1856 G. V. Ellis Demonstrations Anat. (ed. 4) x. 777 Passing vertically through the retina are other fine threads—fibres of Müller. 1886 C. F. Pollock Normal & Path. Histol. Human Eye & Eyelids 127 The fibres of Müller are the most prominent parts of a supporting matrix, which pervades the retina. 1932 W. Penfield Cytol. & Cellular Path. Nervous Syst. II. ix. 436 (heading) Astrocytes of the retina (Müller's cells). Ibid. xvi. 767 In other strata the Müller cells are followed with difficulty. 1961 Duke-Elder & Wybar Syst. Ophthalm. II. 256 (heading) The fibers of Müller. Ibid., On the vitreal aspect of the retina Müller's fibres terminate in large conical or bulbous expansions. 1971 M. J. Hogan et al. Histol. Human Eye ix. 462 The mature Müller cell is complex in shape. |
b. Each of three smooth muscles, of which one is part of the ciliary muscle, one (the orbitalis) is in the orbit, and one (the superior tarsal muscle) is in the upper eyelid.
| 1875 Encycl. Brit. I. 887/2 The inner part of the [ciliary] muscle forms a ring-like arrangement of fasciculi close to the circumference of the iris, and is often called the annular muscle of Müller. 1890 Billings Med. Dict. II. 174/1 Müller's annular muscle, ciliary muscle. Ibid. 174/2 Müller's muscle, smooth muscular fibres found in the membrana orbitalis. Ibid., Müller's palpebral muscle, a collection of smooth muscle-fibres in the upper eyelid. 1912 A. Thomson Anat. Human Eye i. 13 Corresponding to the bases of the free projecting extremities of the ciliary processes..is a group of fibres..arranged circumferentially; these constitute the circular fibres of Müller. 1921 S. E. Whitnall Anat. Human Orbit 82 This muscle, described by H. Müller in 1858, is known as the ‘orbital muscle of Müller’, or musculus orbitalis. Ibid. 296 The palpebral involuntary muscles (of Müller). 1950 Irish Jrnl. Med. Sci. 39 (heading) Some aspects of Muller's [sic] orbital muscle. 1964 [see enophthalmus, -mos]. 1969 Beard & Quickert Anat. Orbit 4 Müeller's [sic] sympathetic (superior tarsal) muscle can be seen extending from the junction of the muscular levator and the levator aponeurosis to the superior border of the tarsus. |