- published: 14 Dec 2013
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A restaurant ( /ˈrɛstərənt/ or /ˈrɛstərɒnt/; French: [ʁɛs.tɔ.ʁɑ̃]) is an establishment which prepares and serves food and drink to customers in return for money, either paid before the meal, after the meal, or with a running tab. Meals are generally served and eaten on premises, but many restaurants also offer take-out and food delivery services. Restaurants vary greatly in appearance and offerings, including a wide variety of the main chef's cuisines and service models.
While inns and taverns were known from antiquity, these were establishments aimed at travelers, and in general locals would rarely eat there. Modern restaurants are dedicated to the serving of food, where specific dishes are ordered by guests and are prepared to their request. The modern restaurant originated in 18th century France, although precursors can be traced back to Roman times.
A restaurant owner is called a restaurateur ( /ˌrɛstərəˈtɜr/); both words derive from the French verb restaurer, meaning "to restore". Professional artisans of cooking are called chefs, while preparation staff and line cooks prepare food items in a more systematic and less artistic fashion.
A day is a unit of time, commonly defined as an interval equal to 24 hours. It also can mean that portion of the full day during which a location is illuminated by the light of the sun, also known as daytime. The period of time measured from local noon to the following local noon is called a solar day.
Several definitions of this universal human concept are used according to context, need and convenience. In 1967, the second was redefined in terms of the wavelength of light, and it became the SI base unit of time. The unit of measurement for time called "day", redefined in 1967 as 86,400 SI seconds and symbolized d, is not an SI unit, but it is accepted for use with SI. A civil day is usually also 86,400 seconds, plus or minus a possible leap second in Coordinated Universal Time UTC, and, in some locations, occasionally plus or minus an hour when changing from or to daylight saving time. The word day may also refer to a day of the week or to a calendar date, as in answer to the question "On which day?" Day also refers to the part of the day that is not night — also known as 'daytime'. The life patterns of humans and many other species are related to Earth's solar day and the cycle of day and night (see circadian rhythms).