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1680s (n.), from Latin inflammat-, past participle stem of inflammare (see inflame) + -ory. As an adjective, "tending to rouse passions or desires," 1711; from 1732 in pathology.
inflammatory in·flam·ma·to·ry (ĭn-flām'ə-tôr'ē)adj. Characterized or caused by inflammation.