- perigee
[perigee 词源字典]
- perigee: see apogee
[perigee etymology, perigee origin, 英语词源] - perigee (n.)
- "point at which a celestial body is nearest the Earth," 1590s, from Modern Latin perigeum (15c.), from Late Greek peregeion, used by Ptolemy as a noun, properly neuter of adjective perigeios "near the earth," from peri ges, from peri "near" (see peri-) + ges, genitive of ge "earth" (see Gaia).