Keyword
research
Info
FrequencyTop 800-900
Type
Kyōiku (3rd grade) 
?
KankenLevel 8
Heisig1417
Readings
Composed of
hole
nine
Mnemonic

Archeologists dig a lot of holes. This one has dug nine holes for research.

Used in vocabulary (376 in total)
research; study; investigation
research institute; (research) laboratory
Examples (200 in total)
A new era requires new research.
I don't study cooking for no reason.
Research is progressing.