base quantity

base quantity

[′bās ′kwän·ə·tē]
(physics)
One of a small number of physical quantities in a system of measurement that are defined, independent of other physical quantities, by means of a physical standard and by procedures for comparing the quantity to be measured with the standard. Also known as fundamental quantity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
[1, 2] and unchanged in the New SI) Base quantity Name Base unit Name Symbol time second s length meter m mass kilogram kg electric current ampere A thermodynamic temperature kelvin K amount of substance mole mol luminous intensity candela cd For convenience, "coherent derived units" (see following paragraph) that are particular combinations of base units, or in two cases a different form of a particular base unit, are given special names and symbols.
According to New Flyer, the Regional Transportation Commission of Southern Nevada has ordered a base quantity of 15 40-foot, low-floor diesel electric buses with assignable options for an additional 15; South Coast Area Transit in Oxnard, CA has ordered eight 40-foot gasoline electric low-floor buses; and the City and County of Honolulu's Department of Transportation Services has ordered a base quantity of 40 40-foot diesel electric buses with assignable options for an additional 40.