active optics

noun plural in form but usually singular in construction

Definition of active optics


  1. :  an optical telescopic system that improves image resolution by compensating for distortions in the material or shape of a mirror Another technological trick called active optics will nullify changes in the telescope’s structure that result from the effects of gravity and temperature. — Thomas Levenson, Discover, February 2006 — compare adaptive optics

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First Known Use of active optics


Seen and Heard

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to cast off or become cast off

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