Anagrammer Crossword Solver is a powerful crossword puzzle resource site. We maintain millions of regularly updated crossword solutions, clues and answers of almost every popular crossword puzzle and word game out there. We encourage you to bookmark our puzzle solver as well as the other word solvers throughout our site. Explore deeper into our site and you will find many educational tools, flash cards and plenty more resources that will make you a much better player. This page shows you that ISOTOPE is a possible answer for Heavy hydrogen, e.g.. You can also see that this clue and answer has appeared in these newspapers and magazines: April 22 2010 Thinks.com, April 22 2008 Thinks.com, December 26 2005 New York Times and more.