Damage inflicted on any part of an organism as the direct or indirect result of exposure to steam, chemicals, heat, flame, electricity or the like, with or without disruption of structural continuity; for burns due to overexposure to the sun use sunburn.

A burn is an injury to skin, or other tissues, caused by heat, cold, electricity, chemicals, friction, or ionizing radiation (such as sunburn, caused by ultraviolet radiation). Most burns are due to heat from hot liquids (called scalding), solids, or fire...