Definitions
from The Century Dictionary.
- noun A surgical speculum.
Etymologies
Sorry, no etymologies found.
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Examples
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"Moschopalus," he says, "an ancient grammarian, mentions four instruments with which the astronomers of antiquity were accustomed to observe the stars -- the catoptron, the dioptron, the eisoptron and the enoptron."
Arabian nights. English Anonymous 1855
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"The dioptron seems to have been so named from a tube through which the observer looked.
Arabian nights. English Anonymous 1855
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