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研

Also sharpen

Readings

On’yomi

  • ケン

Kun’yomi

  • とぐ
On’yomi and kun’yomi?

On’yomi are readings that came from Chinese, written here in katakana. Kun’yomi are native Japanese readings, written in hiragana. Which one is used depends on the word: kanji in compounds often take an on’yomi, and a kanji standing alone often takes a kun’yomi.

What do the dots mean?

The kana after the dot, shown lighter, is okurigana: it is written in kana after the kanji. For example, the reading い·きる of 生 is written 生きる.

Stroke order

Strokes from KanjiVG (CC BY-SA 3.0).

Example words

  • 研究(けんきゅう)research; study; investigation
  • 研(と)ぐto sharpen; to hone; to whet
  • 研究員(けんきゅういん)researcher; lab worker
  • 研究室(けんきゅうしつ)laboratory
  • 研究者(けんきゅうしゃ)researcher
  • 研究家(けんきゅうか)researcher; student (of)
Where do these words come from?

They are common words containing 研, from JMdict, picked automatically with words made of easier kanji first. They are not graded by JLPT level.

Keep exploring

Same radical. KANJIDIC2 files these kanji under radical 石 (no. 112), like 研 (the 8 most common of 18 in the collection).

What is a radical?

Dictionaries file every kanji under one of 214 radicals, a component used for looking it up. A shared radical often hints at a shared theme, but not always, and it says nothing certain about a character’s history. A radical can change shape inside a kanji, as 水 becomes 氵.

Additional detailsSchool grade, frequency, Unicode and sources
School grade
Grade 3 (primary school)
Newspaper frequency
336 of 2,500
Classical radical
石 no. 112
Unicode
U+7814

School grade comes from the Japanese school curriculum. Frequency is the rank among the 2,500 most common kanji in newspapers. Neither is a JLPT level.

Sources for this entry