absolute zero

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zero

 [ze´ro]
1. the absence of all quantity or magnitude; naught.
2. the point on a thermometer scale at which the graduations begin. The zero of the Celsius (centigrade) scale is the ice point; on the Fahrenheit scale it is 32 degrees below the ice point.
absolute zero the lowest possible temperature, designated 0 on the Kelvin or Rankine scale; the equivalent of −273.15°C or −459.67°F.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ab·so·lute ze·ro

the lowest possible temperature, that at which the form of translational molecular motion constituting heat is assumed no longer to exist, determined as -273.15°C or 0 kelvin.
Farlex Partner Medical Dictionary © Farlex 2012

Absolute Zero

The lowest possible temperature—0º Kelvin, -273.15º Celsius, -459.67º F. At absolute zero, all molecular motion stops.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

ab·so·lute ze·ro

(ab'sŏ-lūt' zēr'ō)
The lowest possible temperature; the temperature at which the form of translational motion constituting heat is assumed no longer to exist, determined as -273.15°C or 0° Kelvin.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

absolute zero

the lowest possible temperature for all substances, at which their molecules possess no heat energy. -273.15 °C is usually accepted as absolute zero.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005