| Seidel | Erich, German ophthalmologist, 1882-1946. See: Seidel's scotoma, Seidel's sign. (05 Mar 2000) |
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| Seidel's scotoma | A form of Bjerrum's scotoma. See: Seidel's sign. (05 Mar 2000) |
| Seidel's sign | <clinical sign> A sickle-shaped scotoma appearing as an upward or downward extension of the blind spot. (05 Mar 2000) |
| Schweigger-Seidel, Franz | <person> German physiologist, 1834-1871. See: sheath of Schweigger-Seidel. (05 Mar 2000) |
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| sheath of Schweigger-Seidel | <geometry> A solid, all plane sections of which are ellipses or circles. See Conoid, 2 . The ellipsoid has three principal plane sections, a, b, and c, each at right angles to the other two, and each dividing the solid into two equal and symmetrical parts. The lines of meeting of these principal sections are the axes, or principal diameters of the ellipsoid. The point where the three planes meet is the center. Ellipsoid of revolution, a spheroid; a solid figure generated by the revolution of an ellipse about one of its axes. It is called a prolate spheroid, or prolatum, when the ellipse is revolved about the major axis, and an oblate spheroid, or oblatum, when it is revolved about the minor axis. Origin: Ellipse: cf. F. Ellipsoide. Source: Websters Dictionary (01 Mar 1998) |
| Seidel's s. |
a further development of an arcuate scotoma, which extends at either or both ends, the concavity of the prolongation always being directed toward the fixation point.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Seidel's scotoma (sign) |
see under scotoma.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Seidel | a glass for beer |
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