Second
Second
Second (pronounced: /ˈsɛkənd/), from the Latin word secundus, meaning "following" or "next", is a unit of time in the International System of Units (SI). It is qualitatively defined as the second division of the hour by sixty, the first division by sixty being the minute.
Etymology
The term "second" is derived from the Latin word secundus, which means "following" or "next". This is because the second was originally considered the second division of the hour, with the first division being the minute.
Related Terms
- Minute: A unit of time equal to 60 seconds.
- Hour: A unit of time equal to 60 minutes or 3600 seconds.
- Day: A unit of time equal to 24 hours or 86,400 seconds.
- Week: A unit of time equal to 7 days, 168 hours, or 604,800 seconds.
- Month: A unit of time that is typically equal to about 30 days, 720 hours, or 2,592,000 seconds.
- Year: A unit of time that is typically equal to 365 days, 8,760 hours, or 31,536,000 seconds.
- Decade: A unit of time equal to 10 years, 87,600 hours, or 315,360,000 seconds.
- Century: A unit of time equal to 100 years, 876,000 hours, or 31,536,000,000 seconds.
- Millennium: A unit of time equal to 1,000 years, 8,760,000 hours, or 31,536,000,000,000 seconds.
External links
- Medical encyclopedia article on Second
- Wikipedia's article - Second
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