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Look up hardiness in Wiktionary, the free dictionary.
Hardiness may refer to:
- Hardiness (plants), the ability of plants to survive adverse growing conditions
- Hardiness zone, area in which a category of plants is capable of growing, as defined by the minimum temperature of that area
- Psychological resilience or mental resilience, positive capacity of people to cope with stress and catastrophe
- Hardiness (psychology), a conceptual framework for psychological resilience