perihermion

P3E1R1I1H4E1R1M3I1O1N1

noun

Periapsis around Mercury.

Scrabble 18
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Meanings

noun
  1. Periapsis around Mercury.

    The MMO will be in an elliptic orbit around Mercury with the perihermion of 600 km and the aphermion of 11624 km.

    2012 October, M Kobayashi, H Shibata, K Nogami, M Fujii, T Miyachi, H Ohashi, S Sasaki, T Iwai, M Hattori, H Kimura, T Hirai, S Takechi, H Yano, S Hasegawa, R Srama & E Gru:n, “Mercury dust monitor for the BepiColombo MMO”, in International Workshop of Instrumentation for Planetary Missions

Origin

From peri- + hermeo- + -ion.

Full word history & related roots →
Cite this entry
APA

perihermion. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/perihermion

MLA

“perihermion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/perihermion. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “perihermion,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/perihermion.

Source: perihermion on Wiktionary, CC BY-SA 4.0.