periherm

English

Etymology

From peri- +‎ Ἑρμῆς (Hermês, “Mercury”).

Noun

periherm (plural periherms)

  1. (astronomy) In an orbit around the planet Mercury, the point that is closest to Mercury.

Antonyms
  • (a point in an orbit around the planet Mercury): apoherm

See also

References
  • BepiColombo Mission
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