This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information.
In math, we use the term series a lot, and there are many types of series.

You are watching: What is the plural form of series

How should I craft my sentence when I have three different ones in mind to talk about? Should I settle down for a less mortal alternative of “list of series” or something like that?

The existing question on The possessive and plural forms of “series” suggests the usage of series’. But is that all?

If that’s the only solution, then could you please explain the usage of apostrophe symbol at the end? Is that a plural marker or a possessive marker, or both?



Series (like deer, salmon, and sheep) is pronounced and spelled the same in the plural as in the singular. If either the singular or the plural is used as a possessive, an apostrophe is added to show that in print, though there is no pronunciation difference in speech. Thus,

The series doesn"t converge. (singular)The series don"t converge. (plural)This series" limit is unknown.

See more: What Is The Spanish Word For The Number 55? ? What Is The Spanish Word For The Number 55

(singular possessive)These series" limits are unknown. (plural possessive)

More examples can be seen here.


Not the answer you're looking for? Browse other questions tagged grammatical-number word-usage possessives latin defective-nouns or ask your own question.


site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. rev2021.9.24.40305 Language & Usage Stack Exchange works best with JavaScript enabled

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.