Welcome to the 1520 Perfect Dictionary
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| British thermal unit | |
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| BRITISH THERMAL UNIT Definition: (abbreviation B.T.U., Btu) Unit quantity of heat needed to raise temperature of 1 lb. avoir. of water by 1 degree Fahrenheit, usually from 39.2 degree Fahrenheit to 40.2 degrees Fahrenheit. ____________________________________ See perfect unit (1). See perfect quantity (1). _____ See perfect need (1). See perfect requirement (1). | |
1520 Products |
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1520 Products was established in 2005 with the purpose of entertaining and teaching us on key and important aspects of life (such as marriage, sex, etc) through the playing of games which will allow us to laugh but at the same time pass a message of what is the right or ideal way. |
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 1520 Sex Game |
 1520 Puzzles |
 1520 Marriage Game |