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dependent variable

when considering a function, the variable whose value depends on the value assigned to another variable

diameter

the length of a chord of a circle that passes through the center of the circle

digit

any of the ten symbols of the decimal system: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

dimension

a measure of spatial extent, especially length, width, and height

direct variation

a relationship between two variables such that their ratio is constant

difference

the result of subtracting one number or quantity from another number or quantity

disjunction

a statement of two conditions of which only one condition must be true in order for the statement to be true

distributive property

a property of real numbers that notes that, for any real numbers a, b, and c, a(b + c) = ab + ac

dividend

a number or quantity that is divided by another number or quantity

division

the inverse operation of multiplication