Real Dictionary

correct
If someone is correct, what they have said or thought is true.
adjective: If something is correct, it is in accordance with the facts and has no mistakes.

correct in American English
conforming or adhering to an established standard; proper
to make corrections; specif., to make an adjustment so as to compensate (for an error, counteracting force, etc.)
to make right; change from wrong to right; remove errors from
adjective: conforming to fact or truth; free from error; accurate
intransitive verb: to make a correction or corrections
transitive verb: to set or make true, accurate, or right; remove the errors or faults from

correct in British English
to make free from errors
adjective: free from error; true; accurate