The diameter.
a circle with a diagonal line through it. it looks like = Ø =
An equal sign with a line crossed through it kinda like =\
This is a mathematical symbol meaning "does not equal", as opposed to the usual "equals" sign.
If you mean what does an o with a line over it means, it means that there is emphasis on the o. Such as, Rōb would be pronounced like Robe, not Rob. If you mean how to type it, I just searched what is an o with a line over it? in google, then copy and pasted it onto my document. Hope this helped.
The square root symbol is like a tick with a line connected to the top. Go to http://en.wikipedia.org/wiki/Square_root and the square root symbol is displayed.
In mathematics, the symbol "ø" with a line through it is used to represent the empty set, which is a set with no elements. It is not used to represent the letter "o" or the number zero. The symbol is commonly used in set theory and mathematical logic to denote a unique set with no elements.
The symbol is a zero with a diagonal line through it.
The symbol with a cross with a line through it represents prohibition or the act of something being forbidden or not allowed.
The recycle symbol with a line through it signifies that the item is not recyclable and should not be placed in recycling bins.
The line going through an "o" helps to clarify the letter o, from the number zero.
The symbol "Ø" (the letter O with a vertical line through it) typically represents the concept of "empty set" in mathematics, indicating a set that contains no elements. It can also denote "diameter" in technical contexts or be used in engineering to represent the diameter of a circle. Additionally, in certain Scandinavian languages, it represents a vowel sound.
The symbol for a whole note with a line through it in music notation is called a "breve."
The symbol used to represent a quarter note with a line through it in music notation is called a "cut time" or "alla breve" symbol.
The circles are actually the letter "O". O is the symbol for Oxygen.
a jewish symbol
The shorthand symbol for "through" is a horizontal line with two dots above it. It looks like this: ⇨.
The Australian Dollar (AUD) symbol is $. One vertical line through an "S".