noun, Mathematics.
a sequence of terms in which the ratio between any two successive terms is the same, as the progression 1, 3, 9, 27, 81 or 144, 12, 1, 1/12, 1/144.
a sequence of numbers, each of which differs from the succeeding one by a constant ratio, as 1, 2, 4, 8, … Compare arithmetic progression
geometric progression
A sequence of numbers in which each number is multiplied by the same factor to obtain the next number in the sequence. In a geometric progression, the ratio of any two adjacent numbers is the same. An example is 5, 25, 125, 625, … , where each number is multiplied by 5 to obtain the following number, and the ratio of any number to the next number is always 1 to 5. Compare arithmetic progression.

In mathematics, a sequence of numbers in which each number is obtained from the previous one by multiplying by a constant. For example, the sequence 1, 2, 4, 8, 16, 32 … (in which each number is multiplied by 2 to get the next one) is a geometric progression.

Note: Many processes involving growth and spreading, such as population increases, can be described as geometric progressions.


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