[1] : The Collaborative International Dictionary of English v.0.48

zero \ze"ro\, n.; pl. zerosor zeroes. f. z'ero, from ar.
   ,cafrun, ,cifrun, empty, a cipher. cf. cipher.
   1913 webster
   1. arith. a cipher; nothing; naught.
      1913 webster

   2. the point from which the graduation of a scale, as of a
      thermometer, commences.
      1913 webster

   note: zero in the centigrade, or celsius thermometer, and in
         the r'eaumur thermometer, is at the point at which
         water congeals. the zero of the fahrenheit thermometer
         is fixed at the point at which the mercury stands when
         immersed in a mixture of snow and common salt. in
         wedgwood's pyrometer, the zero corresponds with
         1077deg on the fahrenheit scale. see illust. of
         thermometer.
         1913 webster

   3. fig.: the lowest point; the point of exhaustion; as, his
      patience had nearly reached zero.
      1913 webster

   absolute zero. see under absolute.

   zero method physics, a method of comparing, or measuring,
      forces, electric currents, etc., by so opposing them that
      the pointer of an indicating apparatus, or the needle of a
      galvanometer, remains at, or is brought to, zero, as
      contrasted with methods in which the deflection is
      observed directly; -- called also null method.

   zero point, the point indicating zero, or the commencement
      of a scale or reckoning.
      1913 webster
      1913 webster
see also:
zeros zeroes cipher thermometer absolute zero absolute 
zero method null method zero point 

[2] : WordNet (r) 2.0

zero point
     n : the quantity that registers a reading of zero on a scale
         syn: zero
see also:
zero 

Decimal Point >> D Words
Decimal Point, definition of term: Decimal Point
decimal+point_pag1.html

Dew Point >> D Words
Dew Point, definition of term: Dew Point
dew+point_pag1.html

Data Point >> D Words
Data Point, definition of term: Data Point
data+point_pag1.html

Compass Point >> C Words
Compass Point, definition of term: Compass Point
compass+point_pag1.html

Anchor Point >> A Words
Anchor Point, definition of term: Anchor Point
anchor+point_pag1.html

Boiling Point >> B Words
Boiling Point, definition of term: Boiling Point
boiling+point_pag1.html

Absolute Zero >> A Words
Absolute Zero, definition of term: Absolute Zero
absolute+zero_pag1.html