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
Read Also:
- Active margin
active margin active margin See convergent plate boundary.
- 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 […]
- Active matrix display
active matrix display hardware A type of liquid crystal display where each display element (each pixel) includes an active component such as a transistor to maintain its state between scans. Contrast passive matrix display. (1995-12-09)
- Active measurement project
active measurement project networking, tool, project (AMP) An NLANR project undertaking site-to-site measurement across the HPC networks. This work is intended to compliment the measurements taken by MCI and Abilene within the networks’ infrastructure. Currently round trip times, topology, and packet loss are being measured. (2004-01-18)
- Active methyl
active methyl active methyl n. A methyl group, bound to a quaternary ammonium ion or a tertiary sulfonium ion, that can take part in transmethylation reactions.