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focuser
Derived word form of focus

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Adjust the grain focuser until little dots on the negative snap into focus, like a colony of bacteria in a petri dish.

From Washington Post • Mar. 19, 2017

You get to use this cool thing called a grain focuser.

From Washington Post • Mar. 19, 2017