What does FIRN stand for?
What does FIRN mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: FIRN.
What does FIRN mean?
- A type of old snow which has gone through multiple thaw and refreeze cycles and thus is made of numerous small icy grains, though it is not nearly as saturated with water as snow-cone slush is; can be hard or somewhat soft depending on recent and current weather conditions.