perigeum

الإنجليزية - الإنجليزية

تعريف perigeum في الإنجليزية الإنجليزية القاموس.

It is sometimes, but rarely, used of the nearest points of other orbits, as of a comet, a planet, etc

Called also epigee, epigeum

That point in the orbit of the moon which is nearest to the earth; opposed to apogee