perihelion
UK /ˌpɛɹ.ɪˈhiː.lɪ.ən/ · US /ˌpɛɹ.əˈhiː.li.ən/ noun
Forms perihelia perihelions
- noun (astronomy) The point in the elliptical orbit of a comet, planet, etc., where it is nearest to the Sun.
- noun (figurative) The highest point or state; the peak, zenith.
Synonyms
ϖ acme apex zenith apogee apotheosis ascendance capstone climax coronation crown culmination extreme fastigium high note high point high tide high-water mark midday Mount Everest
Antonyms
Etymology
From perihelium (“perihelion”) (obsolete) + -ion (suffix used for other names of apsides). Perihelium is borrowed from Late Latin perihelium, from Ancient Greek περι- (peri-, “around; surrounding”), ultimately from Proto-Indo-European *per- (“before, in front; first”)) + ἥλιος (hḗlios, “sun”) (ultimately from Proto-Indo-European *sóh₂wl̥ (“sun”)), which was modelled after perigeum (“point in an orbit about the Earth that is closest to the Earth, perigee”).
Webster’s 1913
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “perihelion”, CC BY-SA 4.0. Details