イデアル

noun, na-adjective

ideal; perfect model

General use as a noun or na-adjective for an ideal standard or perfect example. Often used in philosophical, artistic, or everyday contexts.

• 彼かれは理り想そうのイデアルを追おい求もとめている。

  He pursues his ideal of perfection.

• このデザインはとてもイデアルだ。

  This design is very ideal.

noun

ideal (mathematics)

Technical term in ring theory. A subset of a ring closed under addition and multiplication by ring elements.

• 整せい数すう環かんのイデアルについて学まなんだ。

  I learned about ideals in the ring of integers.