peri-

prefix

Etymology: Etymology tree Proto-Indo-European *per-der. Ancient Greek περῐ́ (perĭ́)der. English peri- From Ancient Greek περί (perí, “about, around”). Cognate to for via Proto-Indo-European.

1. surrounding

   “peri- + meter → perimeter”

2. near

   “peri- + helion → perihelion”

3. during

   “peri- + natal → perinatal”