Dictionary.com
Thesaurus.com

geometric series

American  

noun

Mathematics.
  1. an infinite series of the form, c + cx + cx 2 + cx 3 + …, where c and x are real numbers.

  2. geometric progression.


geometric series British  

noun

  1. a geometric progression written as a sum, as in 1 + 2 + 4 + 8

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of geometric series

First recorded in 1830–40

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

That Davis exhibited but ultimately painted over the other two works in his geometric series might suggest some dissatisfaction with their admittedly obscure nature.

From Los Angeles Times Jun. 16, 2025

This situation continues and so leads us to an infinite geometric series.

From Textbooks May 6, 2020

If |r| ≥ 1, the infinite geometric series does not have a sum.

From Textbooks May 6, 2020

As long as we can rewrite the series in the form given by Equation 5.5, it is a geometric series.

From Textbooks Mar. 30, 2016

Over the next two hours we submerge ourselves in finding the sums of infinite geometric series, calculating iterate functions, and expanding powers of binomials.

From "The Running Dream" by Wendelin Van Draanen

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training