fire door


: the door or opening through which fuel is supplied to a furnace or stove
: a fire-resistive door
specifically : an automatic door secured in the open position by a fusible link or thermostatically operated device designed to release the door under the influence of heat and permit its closing by gravity or by weights or other contrivances

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Dictionary Entries Near fire door

Cite this Entry

“Fire door.” Dictionary, Merriam-Webster, Accessed 21 May. 2024.

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