na-adjective
Describes something that has two aspects, elements, or principles. Often used in philosophical, scientific, or analytical contexts.
この問題は二元的に捉えるべきではない。
This problem should not be viewed in a dualistic way.
彼は物事を二元的に考えがちだ。
He tends to think of things in binary terms.
From 二元 (にげん, 'two elements') + 的 (てき, '-like, -ic'). The base 二元 is a Sino-Japanese compound of 二 (two) and 元 (origin, element).