1 Jul 2004 06:59
aphelion
<word <at> m-w.com>
2004-07-01 04:59:00 GMT
2004-07-01 04:59:00 GMT
***************************************************************** Will you travel further or farther for your summer vacation? Find out with our new Concise Dictionary of English Usage. http://www.merriam-webster.com/cgi-bin/book.pl?conusg.htm&6 ***************************************************************** The Word of the Day for July 1 is: aphelion \af-EEL-yun\ noun : the point in the path of a celestial body (as a planet) that is farthest from the sun Example sentence: If you live in the Northern Hemisphere, you might expect the earth to be closest to the sun in July, but in fact it is at aphelion then. Did you know? "Aphelion" and "perihelion" are troublesome terms. Which one means a planet is nearest the sun and which means it is farthest away? An etymology lesson may help you keep those words straight. Just remember that the "ap" of "aphelion" derives from a New Latin prefix that means "away from" (the mnemonic "'A' for 'away'" can help too); "peri-," on the other hand, means "near." And how are "aphelion" and "perihelion" related to the similar-looking astronomical pair, "apogee" and "perigee"? Etymology explains again. "Aphelion" and "perihelion" are based on the Greek word "helios," meaning "sun," while "apogee" and "perigee" are based on "gaia," meaning "earth." The first pair describes distance in relation to the sun, the second in(Continue reading)
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