OClock

Oclock is a term most often encountered as a stylized form of the English time-telling phrase o'clock, short for of the clock. The expression is used after numbers to indicate hours, such as one o'clock or eight o'clock, and is common in everyday speech and writing. Historically the contraction reflects a shortening of "of the clock" and has been standard in English since the early modern period. When written, it is typically lower-case as o'clock, with an apostrophe representing the missing letters; however, brand names and product lines may omit the apostrophe or capitalize Oclock for branding purposes.

In branding and popular culture, Oclock is used as a brand name or product name by various companies. Without reference to a specific company, Oclock may appear in fashion, accessories, or technology contexts as a proper noun. The use is independent of the time-telling convention and is chosen for branding reasons, often as a memorable, compact word.

Because the term can refer to multiple uses or entities, disambiguation may be necessary when it appears in text or citations. In general, Oclock does not denote a single universally recognized organization or concept, but rather a plural set of possible references, depending on context.

See also: o'clock, clock, time.