Math Dictionary of Mathematics Definitions

Mathematics is the science of numbers as Aristotle defined. Here we have collected all the important mathematics definitions. Browse these definitions or use the Search function for a specific definition.

Math Definitions

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There are currently 4 definitions in this directory beginning with the letter O.

Octagon

An 8-sided polygon (a flat shape with straight sides).

Octal

An Octal Number uses only these 8 digits: 0, 1, 2, 3, 4, 5, 6 and 7

Examples:
• 7 in Octal equals 7 in the Decimal Number System
• 10 in Octal equals 8 in the Decimal Number System
• 11 in Octal equals 9 in the Decimal Number System
• 167 in Octal equals 119 in the Decimal Number System

Also called Base 8

Odd Numbers

The numbers that are not evenly divided by 2 are called odd numbers.

Ordinate

The vertical ("y") value in a pair of coordinates. How far up or down the point is.

Always written second in an ordered pair of coordinates such as (12,5).

In this example, the value "5" is the ordinate

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