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crassulacean acid metabolism

British  
/ ˌkræsjʊˈleɪʃən /

noun

  1. the full name for CAM

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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The process is called crassulacean acid metabolism, or CAM, and a small group of scientists have been studying it for several decades because the plants that have it use less water.

From Scientific American • Jul. 13, 2015