1.
high-dimensional; having many dimensions
In mathematics and physics, having a large number of dimensions, as opposed to low-dimensional. Used of spaces, data, and theoretical models.
宇宙は高次元かもしれないという説がある。
There is a theory that the universe may be higher-dimensional.
高次元のデータを可視化するのは難しい。
Visualizing high-dimensional data is difficult.
この理論は高次元の空間を前提としている。
This theory presupposes higher-dimensional space.
2.
high-level; of a higher order; on a more advanced plane
Figuratively, describing thinking, discussion, or judgment as operating at a more advanced, sophisticated, or comprehensive level. Usually approving, most often as the na-adjective 高次元な.
二人の議論は高次元で、私にはついていけない。
Their discussion is on a high level, and I can't keep up.
もっと高次元な視点から問題を考えよう。
Let's think about the problem from a higher-level perspective.
経営の決断には、高次元な総合判断が求められる。
Management decisions call for high-level, comprehensive judgment.
Formed from 高 (high) + 次元 (dimension). The antonym is 低次元.
USAGE:
- Sense 1 is a neutral technical term in math and science.
- Sense 2 is generally complimentary, most often in the form 高次元な: 高次元な議論 (a high-level discussion), 高次元な両立 (balancing at a high level).
SIMILAR WORDS:
- 高度: advanced, high-degree — overlaps with sense 2 but stresses technical sophistication rather than operating on a broader plane.