Crossword Clue:

NITRIFY to combine with nitrogen

AnswerCrossword Clue
SMOKEWord that can combine with the starts of the answers to the six starred clues
FIREWord that can combine with the ends of the answers to the six starred clues
NITRIFYImpregnate with nitrogen.
AMINESCompounds with nitrogen
AMINESOrganic compounds with nitrogen
xxxxxxxTest former husband with a nitrogen compound (7)