0O (zero O) or 0-O may refer to: *0o, 0_o, and 0.o, a

kaomoji Kaomoji emerged in Japan in the 1980s as a way of portraying facial expressions using strings of text characters, such as: * (^ω^) → happy, excited, smile * ( ͡o╭╮ ͡o)→ unhappy, sad, frown Kaomoji appeared in parallel with the emerg ...

emoticon that may refer to shocked, disturbed, or confused. *0-O, abbreviation for 0-operand

instruction set In computer science, an instruction set architecture (ISA) is an abstract model that generally defines how software controls the CPU in a computer or a family of computers. A device or program that executes instructions described by that ISA, s ...

*0o, or zero object, a mathematics term for a simultaneously initial and terminal object *0O, also ZO, an abbreviation for zero order **

Zero-order hold The zero-order hold (ZOH) is a mathematical model of the practical signal reconstruction done by a conventional digital-to-analog converter (DAC). That is, it describes the effect of converting a discrete-time signal to a continuous-time signa ...

, model of the practical signal reconstruction done by a conventional digital-to-analog converter **

Zero order process (chemistry) 0 (zero) is a number representing an empty quantity. Adding (or subtracting) 0 to any number leaves that number unchanged; in mathematical terminology, 0 is the additive identity of the integers, rational numbers, real numbers, and complex ...

, a chemical reaction in which the rate of change of concentration is independent of the concentrations **

Zeroth-order logic The propositional calculus is a branch of logic. It is also called propositional logic, statement logic, sentential calculus, sentential logic, or sometimes zeroth-order logic. Sometimes, it is called ''first-order'' propositional logic to contra ...

, first-order logic without quantifiers **

Zero-order process (statistics) In probability theory and statistics, a zero-order process is a stochastic process In probability theory and related fields, a stochastic () or random process is a mathematical object usually defined as a family of random variables in a probabi ...

, a sequence of random variables, each independent of the previous ones **

Zeroth-order approximation In science, engineering, and other quantitative disciplines, order of approximation refers to formal or informal expressions for how accurate an approximation is. Usage in science and engineering In formal expressions, the ordinal number used ...

, an approximation of a function by a constant *0o, a prefix used in some programming languages to denote

octal Octal (base 8) is a numeral system with eight as the base. In the decimal system, each place is a power of ten. For example: : \mathbf_ = \mathbf \times 10^1 + \mathbf \times 10^0 In the octal system, each place is a power of eight. For ex ...

(base 8) integer literals

See also