What is the meaning of Chronic?

Of a problem, that continues over an extended period of time.

Prolonged or slow to heal.

Of a person, suffering from an affliction that is prolonged or slow to heal.

Inveterate or habitual.

Very bad, awful.

Extremely serious.

Good, great; "wicked".

Marijuana, typically of high quality.

A condition of extended duration, either continuous or marked by frequent recurrence. Sometimes implies a condition which worsens with each recurrence, though that is not inherent in the term.

A person who is chronic, such as a criminal reoffender or a person with chronic disease.

chronic

Source: wiktionary.org