Hypothesis
noun, の adjective
A temporary theory isn't one that's set in stone yet. In fact, it's not really a theory at all, it's more of a hypothesis.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
この土地は、みかんやレモンのようなかんきつるいの果物に向いているんじゃないかという仮説を立てました。
I came up with the hypothesis that this soil is very good for citrus fruits like clementines and lemons.
この仮説の正しさを立証するには、コウイチの力が必要です。
We need Koichi's help to prove that this hypothesis is correct.
面白いとは思うのですが、もしそれを題材に記事を書きたいのであれば、その仮説を裏付ける資料を見つけてくださいね。
I think that’s interesting, but if you want to write an article about that topic you need to find data to prove your hypothesis.