TWiST

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TWiST

Time without Sx of disease or toxicity AIDS A quality of life indicator, corresponding to the number of months preceding the development of a Sx with ≥ grade 3 HIV disease, whichever occurred first. See Q-TWiST.
References in periodicals archive ?
We only disturbed one small wasp nest, no bolts twisted off, the brakes weren't stuck, the back tires were holding air and we sustained no snakebites or other life-threatening injuries.
Then the ant's body is twisted off so only the head remains.
With a twist, the colors phase continually until twisted off again.