Allday

Allday is a term used to describe a duration that spans the entire day. In standard English, the phrase is written as "all day" (two words), but it is frequently stylized as a single word—allday—especially in branding, marketing, and domain names.

Across sectors, allday signals availability, consumption, or use that extends from morning through night. In hospitality and food service, it commonly appears in phrases such as all-day menus, all-day breakfasts, or all-day service hours, indicating continuous operation regardless of time. In consumer products and technology, the stylized form allday is often used to suggest relevance for extended use throughout the day or around-the-clock accessibility.

Branding uses of allday vary by company and jurisdiction, with forms such as AllDay or Allday chosen to convey a modern or casual image. The term is also encountered in media and entertainment as a title treatment or project name, though these uses are diverse and not standardized.

The core meaning remains a simple linguistic concept: something offered or usable across the duration of a day. When encountering "allday" in text, readers should consider the intended branding or marketing context to determine whether it refers to a general concept or a specific product or service.