Definition of peri- in English:

peri-

prefix

  • 1Round; about: pericardium peristyle
  • 2 Astronomy Denoting the point nearest to a specified celestial body: perihelion perilune Compare with apo-.

Origin

from Greek peri 'about, around'.

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Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
noun
a powerful whirlpool in the sea