firn 
(fîrn)
(fîrn)n.
Granular, partially consolidated snow that has passed through one summer melt season but is not yet glacial ice. Also called old snow.
[German, from German dialectal (Alemannic), of last year, from Old High German firni, old; see per1 in the Appendix of Indo-European roots.]
- extracorporeally
- extracranial
- extract
- extractable
- extractible
- extraction
- extractive
- extractively
- extractor
- extracurricular
- extraditable
- extradite
- extradition
- extrados
- extraembryonic
- extragalactic
- extrahepatic
- extra-high voltage
- extrajudicial
- extrajudicially
- extralegal
- extralegally
- extramarital
- extramundane
- extramural