perigee

The term "perigee" is a direct borrowing from the Latin "perigeum," which itself originates from the Greek "perigeion." This Greek word is a compound formed from the prefix "peri-" (meaning "around" or "near") and "gē" (meaning "earth"). The literal construction, "near the earth," was used in ancient astronomy to describe the orbital position closest to our planet. This precise, technical meaning has been preserved unchanged through its journey from Greek scientific terminology into modern English, specifically within the fields of astronomy and astronautics, to denote the closest orbital approach to Earth.

Structure: peri (around, near) + gee (earth) peri: From Greek, a prefix meaning "around, near, enclosing." gee: From Greek gē (γαῖα), meaning "earth," adapted into the English spelling of the word.