Any of a group of delicate clusters of ice crystals that form directly from water vapor, typically on the surface of sea ice.
 Example sentencesExamples
-  The glittering spectacle of frost flowers is a common sight on sea ice during polar springtime when the arrival of sunlight sparks a chain of chemical reactions.
 -  In fact one frost flower that I was taking a photo of all of a sudden went from a dull ice-blue to a bright gold - the sunshine shining through it.
 -  Solar heat is undoubtably destructive to frost flowers and thus most are found in shaded spots.
 -  This is significant, because it's the salt in frost flowers that could be important to climate change.
 -  Each layer of ice is so thin that the total frost flower is almost weightless and will shatter like glass if touched.