• (mathematics) the sum of a finite or infinite sequence of expressions
• a periodical that appears at scheduled times
• a serialized set of programs; "a comedy Series"; "the Masterworks concert Series"
• (sports) several contests played successively by the same teams; "the visiting team swept the Series"
• similar things placed in order or happening one after another; "they were investigating a Series of bank robberies"
• a group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection; "the Post Office issued a Series commemorating famous American entertainers"; "his coin collection included the complete Series of
• (electronics) connection of components in such a manner that current flows first through one and then through the other; "the voltage divider consisted of a Series of fixed resistors"

'Series' in other languages