vergency

vergency
\\-nsē, -si\ noun (-es)
Etymology: verge (III) + -ency
1. obsolete : the act or process of verging, approaching, or bordering on something : tendency, inclination
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

Useful english dictionary. 2012.

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Look at other dictionaries:

  • Vergency — Ver gen*cy, n. 1. The act of verging or approaching; tendency; approach. [R.] [1913 Webster] 2. (Opt.) The reciprocal of the focal distance of a lens, used as measure of the divergence or convergence of a pencil of rays. [R.] Humphrey Lloyd.… …   The Collaborative International Dictionary of English

  • vergency — ver·gen·cy (vurґjən se) vergence …   Medical dictionary

  • vergency — ver·gen·cy …   English syllables

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