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.
Noun. (countable and uncountable, plural evaporations). 1  The process of a liquid converting to the gaseous state. 2  The process in which all or a portion of liquid (in a container) is turned into vapour, in order to increase the concentration of solid matter in the mixture. ( 3 archaic) That which is evaporated; vapor.