Active mass



the effective concentration of a substance.
Historical Examples

Guldberg and Waage expressed this in the form “the active mass of a solid substance is constant.”
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 Various

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  • Active matrix

    of or relating to a high-resolution liquid-crystal display (LCD) with high contrast, the most common type of flat-panel display. noun (computing) a liquid crystal display in which each pixel is individually controlled to provide a sharp image at a wide viewing angle; it is used in laptop and notebook computers (as modifier): an active-matrix screen […]



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