series

Concise Oxford English Dictionary © 2008 Oxford University Press:
series/ˈsɪəriːz/

▶noun (pl. same)

• 1 a number of similar or related things coming one after another.

  ■ a set of books, periodicals, etc., published in a common format.

  ■ a set of stamps, banknotes, or coins issued at a particular time.

• 2 a sequence of related television or radio programmes.

• 3 Music another term for tone row.

• 4 [as modifier] having or denoting electrical components connected in series.

• 5 Geology a range of strata corresponding to an epoch in time, being a subdivision of a system and itself subdivided into stages.

• 6 Mathematics a set of quantities constituting a progression or having values determined by a common relation.

– phrases
in series (of electrical components or circuits) arranged so that the current passes through each successively.

– origin C17: from L., lit. ‘row, chain’, from serere ‘join’.