expression

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expression

1. communication of emotion through music, painting, etc.
2. Maths a variable, function, or some combination of constants, variables, or functions
3. Genetics the effect of a particular gene on the phenotype

expression

[ik′spresh·ən]
(chemical engineering)
Separation of liquid from a two-phase solid-liquid system by compression under conditions that permit liquid to escape while the solid is retained between the compressing surfaces. Also known as mechanical expression.
(computer science)
A mathematical or logical statement written in a source language, consisting of a collection of operands connected by operations in a logical manner.

expression

(programming)
Any piece of program code in a high-level language which, when (if) its execution terminates, returns a value. In most programming languages, expressions consist of constants, variables, operators, functions, and parentheses. The operators and functions may be built-in or user defined. Languages differ on how expressions of different types may be combined - with some combination of explicit casts and implicit coercions.

The syntax of expressions generally follows conventional mathematical notation, though some languages such as Lisp or Forth have their own idiosyncratic syntax.

expression

(1) See Expression Studio.

(2) In programming, a line of source code that returns a value when executed. An expression can comprise any combination of variables, values, operators and functions. For example, a=b+c and price=2*cost are expressions. The more complicated expression (strlen(text_string)*2) is a C example that uses a string length function and returns a value that is twice the number of characters in the string of text. See regular expression.
References in periodicals archive ?
Marton Csokas has a similar expressionless part to play as Trevor while Jonny Lee Miller never convinces as nasty brother Oren.
And coupled with a back injury, by 2005 the mystery man with the expressionless face and eyes hidden permanently behind sunglasses had slumped to 648th in the world.
McKee, 50, stood expressionless as Judge Lord Phillip passed sentence at the High Court in Glasgow and said his crime filled the public with 'revulsion and horror'.
Hilariously uncertain that he has made his point regarding the (mis)recognition of the Other, the filmmaker orchestrates a pan across his expressionless audience--and then launches into a disquisition on dialectical montage.
Both the doctor and pastor remained expressionless as their sentences were read out.
The once soulful, clear eyes are sunken and expressionless, the teeth have gone, and the sculptured cheekbones are now mere hollows.
Exceptionally tall Svetlana Romanova provided a cold and expressionless Myrtha, with little elevation.
Clegg looked Hugh Grant smug and Alexander like a red rodent facing extinction, his expressionless eyes telling us what we long ago knew.
Saddam sat expressionless taking notes as she gave evidence from behind a screen.
It's easy enough to get an expressionless face like at Madam Tussauds but when you try to capture the emotion then that's the hard part.
Although it was a great thing to see them standing there in solidarity they all seemed somewhat expressionless and ineffectual.
As such, comedy serves as a tool not of distraction but of engagement, requiring the viewer to negotiate the gap between the expressionless nature of the artist's performance and the disturbing circumstances to which it refers.