geometric progression

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geometric progression:

see progressionprogression,
in mathematics, sequence of quantities, called terms, in which the relationship between consecutive terms is the same. An arithmetic progression is a sequence in which each term is derived from the preceding one by adding a given number, d,
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geometric progression

[¦jē·ə¦me·trik prə′gresh·ən]
(mathematics)
A sequence which has the form a, ar, ar 2, ar 3, … .
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

geometric progression

a sequence of numbers, each of which differs from the succeeding one by a constant ratio, as 1, 2, 4, 8, …
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005