World Series: series n. (pl. same) 1 number of similar or related things, events, etc.; succession, row, or set. 2 set of related but individual
The plural form of series is series.
The plural for series and the singular for series are the same - simply "series."
The noun 'series' is the plural form of an uncountable (mass) noun. singular: A series of playoffs took place before the tournament. plural: He has published three series of adventure novels, each with a different hero.
The noun series is spelled the same for the singular and plural; one series, two series.
The plural series refers to a group of items or objects that are more than one and of the same kind. For example, "apples" would be the plural series of "apple."
It depends on whether you are using the word series (pl series) in the singular or plural, e.g. there were ten series (plural) of 'Friends'; I enjoyed series one (singular) the most
Seris is the plural form of Seri
Series means a collection of books, events, etc. so it is plural automatically.
Depending on the context it could singular or plural, e.g.The World Series has been the annual championship series of the highest level of professional baseball in the United States and Canada since 1903 - singular.27 World Series have been won by the New York Yankees - plural
Series is plural, though often times used to describe what is thought of a singular event.
Series is a noun that has the same form in the singular and the plural. There is no need for an apostrophe, unless it is in the possessive case: series's for the singular possessive and series' for the plural possessive.
The plural of world is worlds.