Coddington lens

noun Cod·ding·ton lens \ˈkädiŋtən-\

Definition of Coddington lens

  1. :  a hand magnifier consisting of a lens made from a glass sphere around which a deep equatorial groove acting as a diaphragm has been cut

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Origin and Etymology of coddington lens

after Henry Coddington †1845 English mathematician

Seen and Heard

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a trip made at another's expense

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