apside
nounEtymology Back-formation from apsides, from Ancient Greek ἁψῖδες (hapsîdes, “apsides”), plural of ἁψίς (hapsís).
1
Astronomy, Natural sciences Synonym of apsis.
- 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;1862, Monthly Notices of The Royal Astronomical Society, volume 22:
2
Architecture Synonym of apse.
- Derived terms
- apsidal