1. [ noun ] (psychology) being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)
Synonyms: dependency habituation dependence
Related terms: physiological_state drug_addiction narcotic
2. [ noun ] (Roman law) a formal award by a court sentence of a thing or person to another (as of a debtor to his creditor); a surrender to a master

"under Roman law addiction was the justification for slavery"

Related terms: award Roman_law
3. [ noun ] an abnormally strong craving
Related terms: craving
Similar spelling:   addict