Associations to the word «Periapsis»

Wiktionary

PERIAPSIS, noun. (astronomy) The point of a body's elliptical orbit about the system's centre of mass where the distance between the body and the centre of mass is at its minimum.

Dictionary definition

PERIAPSIS, noun. (astronomy) the point in an orbit closest to the body being orbited.

Wise words

Every once in a while, you let a word or phrase out and you want to catch it and bring it back. You can't do that. It's gone, gone forever.
Dan Quayle