What is the definition of Virtual focus? | Dictionary.net

VIRTUAL FOCUS

\vˈɜːt͡ʃuːə͡l fˈə͡ʊkəs], \vˈɜːt‍ʃuːə‍l fˈə‍ʊkəs], \v_ˈɜː_tʃ_uː_əl f_ˈəʊ_k_ə_s]\

Definitions of VIRTUAL FOCUS

1916 - Appleton's medical dictionary
1895 - Glossary of terms and phrases

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A point behind a mirror or in front of a lens at which rays made divergent by reflection or refraction would meet if prolonged. [Lat.]

1916 - Appleton's medical dictionary
By Smith Ely Jelliffe

See Virtual.

1895 - Glossary of terms and phrases
By Henry Percy Smith

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tinctura quininae ammoniata

A preparation made by dissolving quinin sulphate in alcohol [Br. Ph.].

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