### Definitions:

• Of, relating to, or containing quantities of the second degree.
• In <em>algebra</em>, involving the square and no higher power of the unknown quantity or variable of the second degree; of two dimensions.
• In <em>crystallography</em>, tetragonal or dimetric: applied to the system that includes the square prism and related forms. See <internalXref urlencoded="crystallography">crystallography</internalXref>.
• In <em>algebra</em>, an equation in which the highest power of the unknown quantity is the second, the general form being
• <em>plural</em> That branch of algebra which treats of quadratic equations.
• Of or pertaining to a square, or to squares; resembling a quadrate, or square; square.
• Tetragonal.
• Pertaining to terms of the second degree.
• square-shaped
• of a polynomial, involving the second power (square) of a variable but no higher powers, as .
• of an equation, of the form .
• of a <xref>function</xref>, of the form .
• A quadratic polynomial, function or equation.
• a polynomial of the second degree
• an equation in which the highest power of an unknown quantity is a square
• of or relating to the second power
• of or relating to or resembling a square