noun, noun which may take the genitive case particle 'no'
one-dimensional; one dimension
Used in mathematics, physics, and computing to describe a space, object, or array with only one dimension. Also used figuratively for something lacking depth or complexity.
一次元の線は長さだけを持つ。
A one-dimensional line has only length.
この問題を一次元的に考えてはいけない。
You shouldn't think about this problem in a one-dimensional way.
Compound of 一 (one) + 次元 (dimension). 次元 is a Meiji-era calque from English 'dimension', using 次 (order, sequence) and 元 (origin, element).