n, pl  zeros  also  zeroes  1  :  the arithmetical symbol 0 or Ø denoting the absence of all magnitude or quantity  2 a  :  the point of departure in reckoning : specif  :  the point from which the graduation of a scale (as of a thermometer) begins  b  :  the temperature represented by the zero mark on a thermometer .
 
   
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.