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Definitions of apsis
  1. noun
    a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar

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Definition that contains apsis
  • double used of homologous chromosomes associated in pairs in synapsis
  • apogee apoapsis in Earth orbit; the point in its orbit where a satellite is at the greatest distance from the Earth
  • perigee periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth
  • apojove apoapsis in orbit around Jupiter
  • perihelion periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun
  • aposelene apoapsis in orbit around the moon
  • true anomaly the angular distance of a point in an orbit past the point of periapsis measured in degrees
  • bivalent used of homologous chromosomes associated in pairs in synapsis
  • perilune periapsis in orbit around the moon
  • aphelion apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun
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