Answer:

emission

AnswerCrossword Clue
EMISSIONDischarge
EMISSIONAct of sending forth.
EMISSIONIssuance, as of money
EMISSIONA putting into circulation
EMISSIONDischarge into the air
EMISSIONRelease
EMISSIONE.P.A. measurement
EMISSIONCarbon monoxide from an engine, e.g.
EMISSIONSmog test's concern
EMISSIONCarbon dioxide, for one
EMISSIONSubstance discharged
EMISSIONE.P.A. concern