About
The character 阈, with its traditional form 閾, is structured from the door radical 門, simplified to 门, and the component 或, which historically offered phonetic guidance and semantic notions of demarcation or boundary. Its etymology points to an original meaning of the physical doorstep or entranceway of a door, directly informed by this composition. Over centuries, the term's application extended beyond architecture to denote abstract limits or transition points in various disciplines, such as physiology or statistics, reflecting a shift from a solely concrete referent to include conceptual boundaries.
Etymology Hide
