名詞 parsec:

1. a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years
   同義詞：secpar

par.sec

n.（名詞）
A unit of astronomical length based on the distance from Earth at which stellar parallax is one second of arc and equal to 3.258 light-years, 3.08'×03 kilometers, or .98 × 0 3 miles.
秒差距：天文學自地球起的距離單位，星視差為角秒，等于3.258光年，3.08'×03公里，或.98×0 3英里

來源：
par(allax)
par(allax)
sec(ond)
sec(ond)