zero
number
[ ˈzɪərəʊ ]
• no quantity or number; nought; the figure 0.
• "figures from zero to nine"
zero
verb
• adjust (an instrument) to zero.
• "zero the counter when the tape has rewound"
Similar:
return to nought,
return to zero,
adjust to zero point,
• set the sights of (a gun) for firing.
• "the rifle had been zeroed at an elevation of 200"
Origin:
early 17th century: from French zéro or Italian zero, via Old Spanish from Arabic ṣifr ‘cipher’.