1.A number of things or events standing or succeeding in order, and connected by a like relation; sequence; order; course; a succession of things; as, a continuous series of calamitous events. "During some years his life a series of triumphs."
2.(Biol.) Any comprehensive group of animals or plants including several subordinate related groups. Note: Sometimes a series includes several classes; sometimes only orders or families; in other cases only species.
3.(Bot.) In Engler's system of plant classification, a group of families showing certain structural or morphological relationships. It corresponds to the cohort of some writers, and to the order of many modern systematists.
4.(Math.) An indefinite number of terms succeeding one another, each of which is derived from one or more of the preceding by a fixed law, called the law of the series; as, an arithmetical series; a geometrical series.
5.(Elec.) A mode of arranging the separate parts of a circuit by connecting them successively end to end to form a single path for the current; opposed to parallel. The parts so arranged are said to be in series.
6.(Com.) A parcel of rough diamonds of assorted qualities.
...
