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If the line is horizontal, it is the greek letter theta, often used to label an angle. If the line is diagonal, it is used to denote the diagonal of a circle. As the greek letter phi it is used to denote an empty set and also used to label an angle.
They are a code used to denote choke size.
Chatzilla is a IRC client as a addon to Mozilla Firefox web browser. It is mainly used by hackers and IT professionals. One should not use this addon without experience.
'z' is used to denote integers in german. 'z' denotes zahlen
They are all mathematical terms."sum" can be used to mean any arithmetical calculation.However, the terms come in pairs to mean the results of inverse operations:difference is used to denote the result of a subtraction and sum is used to denote the result of an addition;quotient is used to denote the result of a division and product is used to denote the result of a multiplication
Psi is used to denote diverse phenomena, paranormal phenomena, the unexplained, etc..
The hectometer.
G
When people use degrees, they either use "degrees" as in 30 degrees, or the little circle as in 30o. For Radians, they might say radians or possibly R or Rad.
An asterisk, not to be confused with Asterix who is a cartoon character, is used to denote multiplication (or times) ie a*b = a times b. Some old programming languages/computers used double asterisks to denote exponentiation ie a**b = ab. This was because x was often used to denote a variable and its use to denote multiplication could cause confusion.
to denote that you are asking a question
italian