a green variety of corundum used as a gemstone
15 Shades Of Green: Where We Got These Colorful WordsRead more in this article about some frequently asked questions and fun facts related to our definitions.
What’s the infamous chemical that makes NASA’s new life discovery so amazing, and why is it such a big deal?Few poisons are more notorious than arsenic. So, scientists were recently shocked to find that a strange bacterium called Halomonadaceae (a type of protobacteria) in Mono Lake, California, is actually thriving on it. The finding is blowing researchers’ minds, showing how much more there is to be discovered about the types of life forms that may exist both on Earth and in space. To give you an idea …
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