series

A2 · Elementary Countable noun

n. a set of television or radio programs that have the same characters or theme.

n. a set of related television or radio programmes broadcast in regular installments.

日本語:シリーズ※

“My favorite comedy series is returning for a third year this autumn.”

“The documentary series explores the complex relationship between urban development and local wildlife preservation over the last fifty years.”

B1 · Intermediate Countable noun Sports

n. a group of games played between the same two teams.

n. a set of matches played between two teams or players, often to determine an overall winner.

日本語:シリーズ※

“The two national teams will play a five-match series starting next month.”

“After losing the first two games, the team managed to win the series by securing victories in the final three matches.”

C1 · Advanced Countable noun Mathematics Academic · Technical

n. the sum of a group of numbers that follow a specific pattern.

n. the sum of the terms of an infinite or finite sequence.

“The teacher asked us to calculate the sum of the geometric series.”

“The student struggled to determine whether the infinite series converged to a specific value or diverged toward infinity.”

C2 · Proficiency Countable noun Science Academic · Technical

n. a way to group living things that are very similar, below a 'genus' but above a 'species'.

n. a taxonomic rank below section but above species, used to group closely related organisms.

“The botanist identified the new plant as belonging to a specific series within the oak family.”

“The revision of the genus led to several species being reassigned to a different series based on recent genetic data.”