Keyword
research
Info
FrequencyTop 700-800
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 (136 in total)
study; research; investigation
research establishment; research institute; laboratory
ultimate; final; last; eventual
Examples (158 in total)
He was looking into the possibility of buying a house.
He studied the way birds fly.
I concentrated my effort on the study.