N2

acronym: nitrogen
Found on http://cdiac.ornl.gov/pns/acronyms.html#N

N2

Nitrogen (gaseous). Not useful as a cooling medium for environmental chambers
Found on http://www.reliability-plus.co.uk/PRE/glossary.html

n2

into
Found on http://www.noslang.com/dictionary/n/

N2

Larger lunar elliptic semi diurnal constituent. Speed = 2T
Found on http://www.superglossary.com/Glossary/Science/Tides_and_Currents/
No exact match found