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けんきゅう

研究

noun, 'suru' verb

study; research; investigation

と

研

ぐ

'gu' godan verb, transitive verb

1. to sharpen; to hone; to whet; to grind

2. to wash (rice) (esp. 磨ぐ)

みが

研

く

Most common form: 磨く

'ku' godan verb, transitive verb

1. to polish; to shine; to brush (e.g. teeth)

2. to refine; to improve

研

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