The noun CORONA has 6 senses: 1. the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse. 2. (botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower.3. an electrical discharge accompanied by ionization of surrounding atmosphere.he noun CORONA has 6 senses: 1. the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse. 2. (botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower. 3. an electrical discharge accompanied by ionization of surrounding atmosphere.
Fire intensity. n. The amount of energy or heat release per unit time. FireWords uses a non-specific definition of fire intensity that encompasses several specific types of fire intensity measures.
âBut fire is something else altogether. It is a chemical reaction that happens in a mixture of gases.â. Simply defined, fire is a chemical reaction in a mixture of incandescent gases, typically luminous with intense heat. But candle flames, wood fires, and propane fires arenât created equal.