pericenter

English

Etymology tree

Proto-Indo-European *per-der.

Ancient Greek περῐ́ (perĭ́)der.

English peri-

Proto-Indo-European *ḱent-der.

Ancient Greek κέντρον (kéntron)der.

Latin centrumder.

Middle French centrebor.

Middle English center

English center

English pericenter

From peri- + center.

pericenter (plural pericenters)

(astronomy) The point of closest approach of an astronomical object in an elliptical orbit to its center of attraction.
Synonym: perifocus

Antonym: apocenter