天てん然ねん由ゆ来らい

noun which may take the genitive case particle 'no'

naturally derived; naturally occurring

Used to describe substances, ingredients, or phenomena that originate from nature rather than being synthetic or artificial. Often appears in technical, scientific, or product-label contexts.

• この化け粧しょう品ひんは天てん然ねん由ゆ来らいの成せい分ぶんだけで作つくられています。

  This cosmetic is made only from naturally derived ingredients.

• 天てん然ねん由ゆ来らいの放ほう射しゃ性せい物ぶっ質しつは環かん境きょう中ちゅうに広ひろく存そん在ざいする。

  Naturally occurring radioactive materials are widely present in the environment.