periapsen.

Brit.

/ˈpɛrɪaps/, U.S.

/ˈpɛriˌæps/

Origin: Formed within English, by derivation. Etymons: peri- prefix, apse n.

Etymology: < peri- prefix + apse n. Compare earlier periapsis n.

Astronomy and Astronautics.

= periapsis n.

ΘΚΠ

the world > the universe > planet > primary planet > secondary planet, satellite > [noun] > position

periapsis1959

periapse1974

1974 Proc. Royal Soc. A. 340 352 All material having relative orbits with periapse at less than the planetary radius will be accreted.

1989 I. Stewart Does God play Dice? xii. 248 The periapse—the nearest point to Saturn—is chosen as this fixed point.

1998 Science (Nexis) 4 Sept. 1476 The Clementine data, from an elliptical orbit with a higher periapse altitude of 400 km than previous missions.

This is a new entry (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	periapse
释义	periapsen. Brit. /ˈpɛrɪaps/, U.S. /ˈpɛriˌæps/ Origin: Formed within English, by derivation. Etymons: peri- prefix, apse n. Etymology: < peri- prefix + apse n. Compare earlier periapsis n. Astronomy and Astronautics. = periapsis n. ΘΚΠ the world > the universe > planet > primary planet > secondary planet, satellite > [noun] > position periapsis1959 periapse1974 1974 Proc. Royal Soc. A. 340 352 All material having relative orbits with periapse at less than the planetary radius will be accreted. 1989 I. Stewart Does God play Dice? xii. 248 The periapse—the nearest point to Saturn—is chosen as this fixed point. 1998 Science (Nexis) 4 Sept. 1476 The Clementine data, from an elliptical orbit with a higher periapse altitude of 400 km than previous missions. This is a new entry (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.1974
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