Z Edit

z-

Hyphenate all words that begin with z used as a separate letter, such as z-coordinate, z-test and z-axis.

Don’t use italic formatting for the z in these words unless the entire word is italic.

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z-axis

Use lowercase and hyphenate.

Don’t use italic formatting for the z in z-axis unless the entire word is italic.

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zero, zeros

Use zeros, not zeroes, as the plural of zero.

When a measurement is zero, use the plural form of the spelled-out unit of measurement.

Examples

Recommended: 0 kilobytes


Recommended: 0 KB

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zip

Don’t use a filename extension to refer to a type of file. For example, use zip file rather than .zip file.

Don’t use zip or unzip as a verb. Instead, use compress and extract.

For more information, see Referring to file types.

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ZIP code

OK to use in content intended for US locales and audiences. Otherwise, use postal code.

Use uppercase capitalization for ZIP.

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zoom

OK to use zoom, zoom in, zoom out.

For more information, see Interaction verbs.

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