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| a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells. |
| the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language). |
autoregulation au·to·reg·u·la·tion (ô'tō-rěg'yə-lā'shən)
n.
The tendency of the blood flow toward an organ or part to remain at or return to the same level despite changes in arterial pressure.
A biological system equipped with inhibitory feedback systems such that a given change tends to be largely or completely counteracted.