peri- /ˌpɛrə-/ 前綴
 周圍, 近, 圍入, 圍繞, 環, 迫位
 Per·i-  A prefix used to signify around, by, near, over, beyond, or to give an intensive sense; as, perimeter, the measure around; perigee, point near the earth; periergy, work beyond what is needed; perispherical, quite spherical.
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 peri
      n 1: a beautiful and graceful girl
      2: (Persian folklore) a supernatural being descended from
         fallen angels and excluded from paradise until penance is
         done