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Medical Definition of tris
(Entry 1 of 2)
: a white crystalline powder C4H11NO3 used as a buffer (as in the treatment of acidosis)
— called also tris buffer, tromethamine
Tris
nounMedical Definition of Tris (Entry 2 of 2)
: a phosphoric acid ester C9H15Br6O4P formerly used to flameproof clothes and especially children's nightclothes until it was found to cause cancer in animals