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1690s, from French symptomatique or directly from Late Latin symptomaticus, from symptomat-, stem of symptoma (see symptom). Related: Symptomatical (1580s).
symptomatic symp·to·mat·ic (sĭm'tə-māt'ĭk, sĭmp'-)adj.
Of, relating to, or based on symptoms.
Constituting a symptom, as of a disease.