| Snell's l. |
Descartes' l.
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| Snell's law |
see under law.
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| Snellen c. |
a chart imprinted with block letters (Snellen's test type) in gradually decreasing sizes, identified according to distances at which they are ordinarily visible; used in testing visual acuity. See also Snellen's test type, under test type.
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| Snellen chart, etc. |
see under chart, eye, sign, test, and test type.
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| Snellen reform e. |
an artificial eye composed of two concavoconvex plates with an empty space between.
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| SNE | a symptom consisting of the involuntary expulsion of air from the nose |
|---|---|
| SNE | inclined to sneeze |
| SNE | Dutch ophthalmologist who introduced the Snellen chart to study visual acuity (1834-1908) |
| SNE | display consisting of a printed card with letters and numbers in lines of decreasing size |
| SNE | a test of visual acuity using a Snellen chart |