Noon

Noon

Noon (pronounced: /nuːn/) is a term used in various contexts, generally to refer to the middle of the day. In the medical field, it is often used to denote the time of day when certain medications should be taken or medical procedures are scheduled.

Etymology

The term "noon" originates from the Old English 'non', which was used to refer to the ninth hour of a day. This was later changed to mean midday, which is the most common usage today.

Related Terms

• Midday: Another term for noon, often used interchangeably.
• Ante meridiem (AM): The period of time from midnight to noon.
• Post meridiem (PM): The period of time from noon to midnight.
• Circadian rhythm: The natural, internal process that regulates the sleep-wake cycle, which repeats roughly every 24 hours. It can refer to any biological process that displays an endogenous, entrainable oscillation of about 24 hours.
• Chronotherapy: A treatment method that involves timing medication or other treatments to coincide with certain times of day, in order to maximize effectiveness and minimize side effects.

See Also

• Morning
• Afternoon
• Evening
• Night

External links

• Medical encyclopedia article on Noon
• Wikipedia's article - Noon

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