Day meaning

The 24-hour period (mean solar day) that it takes the earth to rotate once on its axis with respect to the sun: the civil or legal day is from midnight to midnight, the astronomical day from noon to noon.
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The portion of a 24-hour period that is devoted to work, school, or business.

An eight-hour day; a sale that lasted for three days.

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A 24-hour period or a portion of it that is reserved for a certain activity.

A day of rest.

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A period of time in history; an era.

We studied the tactics used in Napoleon's day. The day of computer science is well upon us.

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Period of life or activity.

The sick cat's days will soon be over.

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The period during which a celestial body makes a similar rotation.
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A specific, characteristic period in one's lifetime.

In Grandmother's day, skirts were long.

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A period of opportunity or prominence.

Every defendant is entitled to a day in court. That child will have her day.

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Of or relating to the day.
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Occurring before nightfall.

A day hike.

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A particular or specified day.

Memorial Day.

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A period or time; era; age.

The best writer of her day, in days of old.

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A time of flourishing, power, glory, success, etc.

He has had his day.

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The struggle or contest occurring on a certain day or in a certain period of time.

They won the day.

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The time one works each day.

An eight-hour day.

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An unspecified past or future time.

One of these days.

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One's lifetime; life.

To spend one's days in study.

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The period of light between sunrise and sunset.
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Daylight.
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Sunshine.
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The time that it takes any celestial body to revolve once on its axis.
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A patronymic surname​ derived from a medieval diminutive of David.
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An English surname​ from day as a word for a "day-servant", an archaic term for a day-laborer. ,or from given names such as Dagr, Daug, Dege, and Dey, cognate with Scandinavian Dag.
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An Irish surname​ anglicised from Ó Deághaidh (“descendant of a person named Good Luck”).
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A Mbum-Day language of Chad.
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The definition of a day is a 24-hour period of time or the period of light between sunrise and sunset.

An example of a day is Thanksgiving.

An example of day is two o'clock in the afternoon.

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The period of light between dawn and nightfall; the interval from sunrise to sunset.
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One of the numbered 24-hour periods into which a week, month, or year is divided.
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The 24-hour period during which the earth completes one rotation on its axis, traditionally measured from midnight to midnight.
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Working during the day.

The day nurse.

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Origin of day

This surname has multiple origins. Besides the ones listed below, Norman origin has also been suggested from De Haie", or "a corruption of the Normandy French D'Ossone, from the town of Ossone, in Normandy".