Number sign in the context of "Pfund (weight)"

The pound or pound-mass is a unit of mass used in both the British imperial and United States customary systems of measurement. Various definitions have been used; the most common today is the international avoirdupois pound, which is legally defined as exactly 0.45359237 kilograms, and which is divided into 16 avoirdupois ounces. The international standard symbol for the avoirdupois pound is lb; an alternative symbol (when there might otherwise be a risk of confusion with the pound-force) is lb_m (for most pound definitions), # (chiefly in the U.S.), and ℔ or ″̶ (specifically for the apothecaries' pound).

The unit is descended from the Roman libra (hence the symbol lb, descended from the scribal abbreviation, ℔). The English word pound comes from the Roman libra pondo ('the weight measured in libra'), and is cognate with, among others, German Pfund, Dutch pond, and Swedish pund. These units are now designated as historical and are no longer in common usage, being replaced by the metric system.

The pound sign (£) is the symbol for the pound unit of sterling – the currency of the United Kingdom and its associated Crown Dependencies and British Overseas Territories and previously of Great Britain and of the Kingdom of England. The same symbol is used for other currencies called pound, such as the Egyptian and Syrian pounds. The sign may be drawn with one or two bars depending on personal preference, but the Bank of England has used the one-bar style exclusively on banknotes since 1975.

In the United States, "pound sign" refers to the symbol # (number sign). In Canada, "pound sign" can mean £ or #.

In linguistics and philosophy of language, an utterance is felicitous if it is pragmatically well-formed. An utterance can be infelicitous because it is self-contradictory, trivial, irrelevant, or because it is somehow inappropriate for the context of utterance. Researchers in semantics and pragmatics use felicity judgments much as syntacticians use grammaticality judgments. An infelicitous sentence is marked with the pound sign.

The terms felicitous and infelicitous were first proposed by J. L. Austin as part of his theory of speech acts. In his thinking, a performative utterance is neither true nor false, but can instead be deemed felicitous or infelicitous according to a set of conditions whose interpretation differs depending on whether the utterance in question is a declaration ("I sentence you to death"), a request ("I ask that you stop doing that") or a warning ("I warn you not to jump off the roof").

Web colors are colors used in displaying web pages on the World Wide Web; they can be described by way of three methods: a color may be specified as an RGB triplet, in hexadecimal format (a hex triplet) or according to its common English name in some cases. A color tool or other graphics software is often used to generate color values. In some uses, hexadecimal color codes are specified with notation using a leading number sign (#). A color is specified according to the intensity of its red, green and blue components, each represented by eight bits. Thus, there are 24 bits used to specify a web color within the sRGB gamut, and 16,777,216 colors that may be so specified. In hexadecimal, these are specified with two hexidecimal digits per colour, leading to a total of six hexadecimal digits.

Colors outside the sRGB gamut can be specified in Cascading Style Sheets by making one or more of the red, green and blue components negative or greater than 100%, so the color space is theoretically an unbounded extrapolation of sRGB similar to scRGB. Specifying a non-sRGB color this way requires the RGB() function call. It is impossible with the hexadecimal syntax (and thus impossible in legacy HTML documents that do not use CSS).

The well-field system or well-and-field system (Chinese: 井田制度; pinyin: jǐngtián zhìdù) was a Chinese land redistribution method existing between the eleventh or tenth century BCE (Western Zhou dynasty) to around the Warring States period. Though Mencius describes examples from the Xia and Shang dynasties, these could be mythological or imagined, and credited King Wen of Zhou as one of the persons enacting the system. The name comes from Chinese character 井 (jǐng), which means 'well' and looks like the # symbol; this character represents the theoretical appearance of land division: a square area of land was divided into nine identically sized sections; the eight outer sections (私田; sītián) were privately cultivated by farmers, or nong in Chinese, one of the occupations of the four occupations system; and the center section (公田; gōngtián) was communally cultivated on behalf of the government, or in some cases, the landowning aristocrat or duke.

While all fields were government- or aristocrat-owned, the private fields were managed exclusively by farmers and the produce was entirely the farmers'. It was only produce from the communal fields, worked on by all eight families, that went to the government for famine distribution or the aristocrats and which, in turn, could go to the king as tribute.