fu·ma·to·ri·um (fyōō'mə-tôr'ē-əm, -tōr'-) n.
pl.fu·ma·to·ri·ums or fu·ma·to·ri·a (-tôr'ē-ə, -tōr'-) An airtight fumigation chamber in which chemical vapors are used to destroy insects and fungi on plants. Also called fumatory.
[New Latin fūmātōrium, from Latin fūmāre, to smoke, from fūmus, smoke.]