Main Entry: se·ries

Pronunciation: \ˈsi(ə)r-(ˌ)ēz\

Function: noun

Inflected Form(s): plural series

1 : a number of things or events of the same class coming one after another in spatial or temporal succession <described a new series of cases>
2 : a group of specimens or types progressively differing from each other in some morphological or physiological attribute <a series of antitoxins>
3 : a group of chemical compounds related in composition and structure