periherm

P3E1R1I1H4E1R1M3

noun

In an orbit around the planet Mercury, the point that is closest to Mercury.

Opposite
apoherm
Scrabble 15
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Meanings

nounperiherm (plural periherms)

plural periherms

  1. astronomyIn an orbit around the planet Mercury, the point that is closest to Mercury.

Synonyms & antonyms

antonym(s) of “a point in an orbit around the planet Mercury”

Opposite
apoherm

Origin

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

Full word history & related roots →
Cite this entry
APA

periherm. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/periherm

MLA

“periherm.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/periherm. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “periherm,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/periherm.

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