A prime meridian is a meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°.
W0 may refer to.
The word joiner (WJ) is a code point in Unicode used to indicate that word separation should not occur at a position, when using scripts that do not use explicit spacing.
Zero Waste is a philosophy that encourages the redesign of resource life cycles so that all products are reused.
Zero width (also zero-width) refers to a non-printing character used in computer typesetting of some complex scripts.
The zero-width joiner (ZWJ) is a non-printing character used in the computerized typesetting of some complex scripts such as the Arabic script or any Indic script.
The zero-width non-joiner (ZWNJ) is a non-printing character used in the computerization of writing systems that make use of ligatures.
The zero-width space (ZWSP) is a non-printing character used in computerized typesetting to indicate word boundaries to text processing systems when using scripts that do not use explicit spacing, or after characters (such as the slash) that are not followed by a visible space but after which there may nevertheless be a line break.