Perihermion

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 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."

Example

More examples

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

Etymology

From peri- + hermeo- + -ion.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.