Medical Definition of Puberty, precocious. Puberty, precocious: Precocious puberty is the unusually early development of secondary sexual features. The onset of sexual maturation in a girl before age 8 or a boy before age 9 is usually considered to be precocious puberty. Last Editorial Review: 7/1/2016.
Evaporative coolers lower the temperature of air using the principle of evaporative cooling, unlike typical air conditioning systems which use vapor-compression refrigeration or absorption refrigerator. Evaporative cooling is the addition of water vapor into air, which causes a lowering of the temperature of the air.
Portable evaporative coolers cool a space by evaporating water into the air as a fine cool mist. The system pulls in dry hot air and passes the air through a moist cooling pad. This pad, or cooling media as it's sometimes called, absorbs water from an onboard water reservoir or pan that you'll fill periodically.