0
0 adj 1 :
indicating the absence of any or all units under consideration ; "
a zero score " [
synonym : {
zero }, {
0 }]
n 1 :
a mathematical element that when added to another number yields the same number [
synonym : {
zero }, {
0 }, {
nought },
{
cipher }, {
cypher }]
A dictionary containing a natural history requires too many hands ,
as well as too much time ,
ever to be hoped for . --
Locke .
0 \
0 \
adj .
1 .
indicating the absence of any or all units under consideration ; --
representing the number zero as an Arabic numeral .
Syn :
zero [
WordNet 1 .
5 PJC ]
{
zero }
0 Numeric zero ,
as opposed to the letter ‘
O ’ (
the 15th letter of the English alphabet ).
In their unmodified forms they look a lot alike ,
and various kluges invented to make them visually distinct have compounded the confusion .
If your zero is center -
dotted and letter -
O is not ,
or if letter -
O looks almost rectangular but zero looks more like an American football stood on end (
or the reverse ),
you '
re probably looking at a modern character display (
though the dotted zero seems to have originated as an option on IBM 3270 controllers ).
If your zero is slashed but letter -
O is not ,
you '
re probably looking at an old -
style ASCII graphic set descended from the default typewheel on the venerable ASR -
33 Teletype (
Scandinavians ,
for whom Ø
is a letter ,
curse this arrangement ).
(
Interestingly ,
the slashed zero long predates computers ;
Florian Cajori '
s monumental A History of Mathematical Notations notes that it was used in the twelfth and thirteenth centuries .)
If letter -
O has a slash across it and the zero does not ,
your display is tuned for a very old convention used at IBM and a few other early mainframe makers (
Scandinavians curse this arrangement even more ,
because it means two of their letters collide ).
Some Burroughs /
Unisys equipment displays a zero with a reversed slash .
Old CDC computers rendered letter O as an unbroken oval and 0 as an oval broken at upper right and lower left .
And yet another convention common on early line printers left zero unornamented but added a tail or hook to the letter -
O so that it resembled an inverted Q or cursive capital letter -
O (
this was endorsed by a draft ANSI standard for how to draw ASCII characters ,
but the final standard changed the distinguisher to a tick -
mark in the upper -
left corner ).
Are we sufficiently confused yet ?
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