Definition of COMMODITY RATE. : a common carrier rate distinguished from a class rate and applicable only to a specific commodity or group of related commodities carried between specific points or territories. ADVERTISEMENT. a common carrier rate distinguished from a class rate and applicable only to a specific commodity or group of related commodities carried between specific points or territories.
Cubic Zirconia. Cubic zirconia (CZ), a diamond simulant, is not only the oldest diamond substitute, but also the most popular. Composed of zirconium oxide (ZrO 2) the mineral is extremely rare in natural form. Discovered by German mineralogists in 1937, zirconium wasnât considered economically feasible.ubic zirconia possesses less brilliance (less sparkle), but has more fire (flashes of rainbow color.) CZ is also very hard, not quite as hard as a diamond, but like a diamond can scratch glass.
Also known as the axis of symmetry, this line divides the parabola into mirror images. The line of symmetry is always a vertical line of the form x = n, where n is a real number. This tutorial focuses on how to identify the line of symmetry. Learn how to use either a graph or an equation to find this line. \\n\\t.