periapses

• plural

  plural

  The grammatical form denoting more than one person, place, thing, or idea.

  of periapsis.
  periapsis

  noun

  (in technical usage) the preferred term for pericenter.

More Suggestions

• periapt
• periapical
• perianth
• periblem
• periclase
• pericope
• perigee
• perilous
• perilune