잔존해요 · 잔존했어요 · 잔존할 거예요 · 잔존한 (+noun)
to remain, to linger, to survive (as a remnant)
Example
토양에 잔존하는 농약이 건강에 해로울 수 있어요.
Pesticide remaining in the soil can be harmful to health.
Word parts
잔 leftover+존 exist
Literally 'leftover existing' — what is still there after the rest is gone.
Related words