SEMILENS

Sem"i*lens`, n. (Opt.)

Definition: The half of a lens divided along a plane passing through its axis.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

26 April 2025

PYROELECTRICITY

(noun) generation of an electric charge on certain crystals (such as tourmaline) as a result of a change in temperature


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Coffee Trivia

Coffee is a brewed drink prepared from roasted coffee beans, the seeds of berries from certain Coffea species. When coffee berries turn from green to bright red – indicating ripeness – they are picked, processed, and dried. Dried coffee seeds are roasted to varying degrees, depending on the desired flavor.

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