similar things placed in order or happening one after another
"they were investigating a series of bank robberies"
a periodical that appears at scheduled times
"He subscribed to a weekly series of gardening magazines to learn about growing tomatoes."
(sports) several contests played successively by the same teams
"the visiting team swept the series"
(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"
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 Indian-head pennies"
(mathematics) the sum of a finite or infinite sequence of expressions
"The professor explained that finding the limit of the series requires analyzing how each term in the infinite sequence contributes to the total sum."
A number of things that follow on one after the other or are connected one after the other.
"The heavy rain created a series of puddles along the sidewalk that made my commute treacherous."
In plain English: A series is a group of similar things that happen one after another.
"I have been watching the new TV series every night this week."
Connected one after the other in a circuit.
"The technician adjusted the resistance of each bulb as he tested them, ensuring they were connected in series so that if one failed, the entire string would go dark."
In plain English: Something described as a series happens again and again in a regular pattern.
"She decided to watch a series of short videos about cooking before dinner."
Usage: Use this adjective to describe electrical components arranged so that current flows through each one sequentially without branching paths, such as lights wired in series where turning off one breaks the entire line. Do not confuse this with parallel connections, which allow multiple independent routes for electricity.
The word series entered English in the 1610s from Latin seriēs, which originally meant "a joining or binding together." It derives from the verb serere ("to join") and ultimately traces back to a root meaning "to bind" or "line up," sharing ancestry with words like desert and sermon.