01 A prefix meaning three, thrice, threefold; as in tricolored, tridentate.
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1.
A prefix meaning three, thrice, threefold; as in tricolored, tridentate.
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2.
A prefix (also used adjectively) denoting three proportional or combining part, or the third degree of that to the name of which it is prefixed; as in trisulphide, trioxide, trichloride.(Chem.)