from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The location of the center of a burst of a nuclear weapon at the instant of detonation. The zero point may be in the air, or on or beneath the surface of land or water, depending upon the type of burst, and it is thus to be distinguished from ground zero.
from the GNU version of the Collaborative International Dictionary of English
- n. the point indicating zero, or the commencement of a scale or reckoning.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the point on a scale from which positive or negative numerical quantities can be measured
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