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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 peri·he·lion /ˌpɛrəˈhiljən/
 近日點

From: Webster's Revised Unabridged Dictionary (1913)

 Per·i·hel·ion Per·i·he·li·um n.; pl. Perihelia   Astron. That point of the orbit of a planet or comet which is nearest to the sun; -- opposed to aphelion.
 ◄ ►

From: WordNet (r) 2.0

 perihelion
      n : periapsis in solar orbit; the point in the orbit of a planet
          or comet where it is nearest to the sun [ant: aphelion]
      [also: perihelia (pl)]