what is the actual meaning of the no. 0 (zero)?

Answer 1

zero is a good meaning if zero not known then you imagin every thing is not possible without zero.

Answer 2

0 as a number
0 is the integer that precedes the positive 1, and follows −1. In most (if not all) numerical systems, 0 was identified before the idea of 'negative integers' was accepted.

Zero is an integer which quantifies a count or an amount of null size; that is, if the number of your brothers is zero, that means the same thing as having no brothers, and if something has a weight of zero, it has no weight. If the difference between the number of pieces in two piles is zero, it means the two piles have an equal number of pieces. Before counting starts, the result can be assumed to be zero; that is the number of items counted before you count the first item and counting the first item brings the result to one. And if there are no items to be counted, zero remains the final result.

While mathematicians all accept zero as a number, some non-mathematicians would say that zero is not a number, arguing one cannot have zero of something. Others hold that if you have a bank balance of zero, you have a specific quantity of money in your account, namely none. It is that latter view which is accepted by mathematicians and most others.

Almost all historians omit the year zero from the proleptic Gregorian and Julian calendars, but astronomers include it in these same calendars. However, the phrase Year Zero may be used to describe any event considered so significant that it virtually starts a new time reckoning.
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0 (number), a number, glyph, and Hindu-Arabic or Indian numeral.
The "zero function", the constant function whose value is zero, for every element in its domain.
The slashed zero glyph used to distinguish the number '0' from the letter 'O' on character displays in mainframe and early personal computing (not to be confused with Danish letter Ø).
A root of a function is also known as a zero of the function.
Zero (complex analysis) - is a root of a holomorphic function

As a year
Year zero, used as the start of astronomical year numbering and Hindu and Buddhist years.
Year Zero (political notion), the Cambodian genocide.

As a noun
Zero (linguistics), an element not realized in speech, as in a zero article
Zero day or "0day" refers to software, media, or information that is obtained either prior to or on the day of the official release
Size Zero, a petite dress size for women

As a verb
Zeroisation, setting every bit in the data to zero, in cryptographic computing
In firearms, to "zero" a weapon means to adjust the iron sights or the telescopic sight so that it aims exactly where the bullet goes at a given distance.
calibration
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0 (zero) is both a number — or, more precisely, a numeral representing a number — and a numerical digit. Zero is the last digit to be incorporated in most numeral systems. In the English language, zero may also be called nil when a number, o/oh when a numeral, and nought/naught in either context.

Answer 3

There is one and there is none and zero is the place marker for the latter. If there are many more, depending upon our numerical system, it also holds the place for the next level. In the 10-base system, if I have 9 and add 1, then I have 1 set of ten, represented as 10. If I have 99 and add 1, then I have ten sets of ten, represented as 100.

Answer 4

Zero - nothing; figure 0; point on a graduated instrument from which positive and negative quantities are reckoned.

Answer 5

Arabs introduced this number in the mathematical equations. At least something positive there. They had to find a way to express that (nothing left) value somehow. they did.

Answer 6

Starting and ending point. Either values increase positively or negatively.

Answer 7

Naught.

Answer 8

NO, NODDA, NOT HAPPENING

Answer 9

YOU!!!