continuum

A continuum is something that keeps on going, changing slowly over time, like the continuum of the four seasons.

In addition to meaning "a whole made up of many parts," continuum, pronounced "kon-TIN-yoo-um," can describe a range that is always present. For example, in a high school, at any time, there are students who are learning algebra, then advancing to geometry, trigonometry, and calculus. Just as the ninth graders master their particular math, they move on to the next one, as new ninth graders enter the school and the seniors graduate.

Definitions of continuum
1

n a continuous nonspatial whole or extent or succession in which no part or portion is distinct or distinguishable from adjacent parts

Types:
history
the continuum of events occurring in succession leading from the past to the present and even into the future
Type of:
time
the continuum of experience in which events pass from the future through the present to the past

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