apside

Back-formation from apsides, from Ancient Greek ἁψῖδες (hapsîdes, “apsides”), plural of ἁψίς (hapsís).

apside (plural apsides)

1. (astronomy) Synonym of apsis.
   • 1862, Monthly Notices of The Royal Astronomical Society, volume 22:

     The phenomena which Sirius presented about 1841, that being according to Peters (confirmed by the results above) the time of the passage of the lower apside, are sufficiently remarkable;

2. (architecture) Synonym of apse.

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apside f (plural apsides)

1. (astronomy) apsis

• “apside”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

• IPA^(key): /ˈa.psi.de/
• Rhymes: -apside
• Hyphenation: à‧psi‧de

apside m (plural apsidi)

1. (astronomy) apsis

• aspide, dipesa, sapide

apside f (plural apsides)

1. (astronomy) apsis (point in elliptical orbit when a body is closest or furthest from the sun)