pericenter

 [per-uh-sen-ter]  

per·i·cen·ter

   [per-uh-sen-ter]
noun Astronomy.
the point at which a heavenly body orbiting around a primary other than the earth or sun is closest to the primary.
Compare apocenter.

Origin:
1900–05; peri- + center

Related forms
per·i·cen·tral, per·i·cen·tric, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To pericenter

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Pericenter is always a great word to know.
So is atmosphere. Does it mean:
a low-mass star that emits low to average amounts of light that burn their hydrogen slowly over a long life span
the gaseous envelope surrounding a heavenly body
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Collins
World English Dictionary
pericentre or (US) pericenter (ˈpɛrɪˌsɛntə)
 
—n
the point in an elliptical orbit that is nearest to the centre of mass of the system
 
pericenter or (US) pericenter
 
—n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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