περί
perí
“around”
17 words in English grow from this root.
Periapsis
Earthπερίperí
“near the arch-point”
Periastron
Earthπερίperí
“near the star”
Pericardium
Medicineπερίperí
“around the heart”
Perigee
Earthπερίperí
“near the earth”
Perihelion
Earthπερίperí
“near the sun”
Perimeter
Numberπερίperí
“measure around”
Period
Everydayπερίperí
“way around”
Periodization
Sportπερίperí
“a going round”
Periodontitis
Medicineπερίperí
“inflammation around the tooth”
Peripatetic
Philosophyπερίperí
“walking around”
Peripeteia
Artπερίperí
“a falling around”
Periphrasis
Wordsπερίperí
“speaking around”
Periplus
Earthπερίperí
“a sailing around”
Periscope
Scienceπερίperí
“looking around”
Peristalsis
Medicineπερίperí
“a wrapping around”
Peritoneum
Medicineπερίperí
“stretched around”
Peritonitis
Medicineπερίperí
“inflammation of the stretched-around membrane”