pericentral

pericenter

[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

pericentral, pericentric, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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