研 – Meaning, Reading & Usage

What does 研 mean in Japanese?

研 means “polish, research” in Japanese. You will often see it in practical words such as 研究 (research), 研ぐ (to sharpen; to polish), and 研修 (training).

For learners, the key is to study 研 through real vocabulary. The examples below show how the kanji works in words, sentences, and related kanji.

Reading

On’yomi: ケン (ken)

Kun’yomi: と-ぐ (to-gu)

Basic Information

Kanji

How to Understand This Kanji

研 is not limited to one English translation. In 研究 (けんきゅう), it means research; in 研ぐ (とぐ), it points to to sharpen; to polish; and in 研修 (けんしゅう), it is used for training. Reading these compounds side by side helps you understand the range of the kanji.

Common Words

  • 研究(けんきゅう / kenkyū) — research
  • 研ぐ(とぐ / togu) — to sharpen; to polish
  • 研修(けんしゅう / kenshū) — training
  • 研磨(けんま / kenma) — polishing
  • 研究者(けんきゅうしゃ / kenkyūsha) — researcher
  • 研ぎ石(とぎいし / togiishi) — whetstone

Example Sentences

  • 大学で歴史を研究しています。

    だいがくでれきしをけんきゅうしています。 / Daigaku de rekishi o kenkyū shite imasu.

    I am researching history at university.

  • 研究室で資料を読みました。

    けんきゅうしつでしりょうをよみました。 / Kenkyūshitsu de shiryō o yomimashita.

    I read materials in the lab.

  • 毎日日本語を研修で学びます。

    まいにちにほんごをけんしゅうでまなびます。 / Mainichi Nihongo o kenshū de manabimasu.

    I learn Japanese every day in training.

When Learners Usually See This Kanji

Start with 研究 (けんきゅう / kenkyū) because it keeps the core meaning of 研 clear. Then add 研ぐ and 研修 to see how the reading and meaning shift in real vocabulary. Do not memorize 研 as a single English word; connect it to actual words and example sentences.

Summary

研 means “polish, research” and appears in useful Japanese words such as 研究, 研ぐ, and 研修.