noun ver·gen·cy \-nsē, -si\

Definition of vergency



  1. 1 obsolete :  the act or process of verging, approaching, or bordering on something :  tendency, inclination

  2. 2 :  a measure of convergence or divergence of a pencil of rays entering or issuing from a lens or mirror that is expressed as the reciprocal of the distance from lens or mirror to the focus of the rays and for rays through a principal focus is equal to the focal power of the lens or mirror

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Origin and Etymology of vergency

3verge + -ency

Seen and Heard

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to criticize severely

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