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IPA: ˈæps

(architecture) A semicircular projection from a building, especially the rounded east end of a church that contains the altar.
The bishop's seat or throne in ancient churches.
A reliquary, or case in which the relics of saints were kept.
(obsolete or dialectal) An aspen tree.
(astronomy, obsolete) Obsolete form of apsis.; The nearest and furthest points to the centre of gravitational attraction for a body in orbit. More usually called an apsis. [(architecture) A recess or projection, with a dome or vault, at the east end of a church; an apse.]

Examples of "apse" in Sentences

The Gothic cathedral featured a grand apse that housed the altar and was adorned with intricate stained glass windows
The main entrance of the church was flanked by two smaller apses that added architectural interest to the building
The apse of the basilica was decorated with frescoes depicting scenes from the life of Saint Peter
As the priest walked to the apse to deliver his sermon, the congregation bowed their heads in reverence
The apse of the ancient Roman temple was dedicated to the goddess Minerva and was considered a sacred space for worship