teaching unit; module
Used in educational contexts for a self-contained block of study within a curriculum or textbook.
In the next unit, we will study the culture of the Edo period.
trading unit; share unit
singularism; monadism · monophyletism
unit credit system
Compound of 単 (single, unit) and 元 (origin, element). The exact historical derivation is uncertain; the term is conventionally used in modern educational contexts.