Investigation
noun, verbal noun
If you do research to brighten a subject area, you're probably doing some kind of investigation that illuminates the unknown.
This word is usually found in academic and scientific contexts, and suggests a thorough investigation meant to ascertain or clarify something.
This is a jukugo word, which usually means on'yomi readings from the kanji. You've seen those readings in other compounds, so hopefully you know how to read this one.
自分の欠点を究明しました。
I investigated my shortcomings.
事故の原因を究明したいんです。
I want to get to the bottom of the cause of the accident.
アルミ電池の弱点を究明した。
I investigated the weaknesses of aluminum batteries.
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