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“minute”
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“minute”
arc minute, arc second
Units for measuring small angles, used in astronomy.
An arc minute (symbol ') is one-sixtieth of a degree, and an arc second (symbol ") is one-sixtieth of an arc minute. Small distances in the sky, as between two close stars or the apparent width of a planet's disk, are expressed in minutes and seconds of arc.
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Astronomy and related astronomical terms
(page 3)
revolutions per minute, rpm
The number of times a wheel rotates in one minute.
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Automobile or Related Car Terms
(page 5)