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Apsf

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• Apsidal

  architecture. a semicircular or polygonal termination or recess in a building, usually vaulted and used especially at the end of a choir in a church. astronomy. an apsis. historical examples the roof of the chancel is apsidal, externally, as well as the nave, covered with modern house tiles. a history of horncastle james conway walter […]

• Apsidal motion

  the rotation of the major axis of an eccentric orbit in the plane of the orbit.

• Apsides

  astronomy. either of two points in an eccentric orbit, one (higher apsis) farthest from the center of attraction, the other (lower apsis) nearest to the center of attraction. architecture. an apse. historical examples the two are joined by a diameter called the line of the apsides. the sailor’s word-book william henry smyth the line of […]

• Apsis

  astronomy. either of two points in an eccentric orbit, one (higher apsis) farthest from the center of attraction, the other (lower apsis) nearest to the center of attraction. architecture. an apse. historical examples it does not span the apsis of a church; it spans rivers and valleys. beacon lights of history, volume v john lord […]

• Apsidiole

  a small apse, especially one attached to a larger apse or a transept.

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