Refers to an abstract or conceptual area, such as a sphere of influence, knowledge, or activity. Often used in formal or technical contexts.
この研究は学際的な圏域に属している。
This research belongs to an interdisciplinary sphere.
経済圏域の拡大が期待されている。
Expansion of the economic sphere is expected.
Compound of 圏 (けん, 'sphere' or 'range') and 域 (いき, 'area' or 'region'). The exact historical derivation is uncertain, but the combination naturally expresses a bounded conceptual area.