NBN definitions

Nbn

1) Niobium nitride
Found on https://www.crosswordclues.com/clue/nbn

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NbN

Niobium(III) Nitride Molar mass: 106.91308
Found on http://www.convertunits.com/molarmass/Niobium(III)+Nitride

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NBN

Newborn nursery
Found on http://www.translationdirectory.com/glossaries/glossary124.htm

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