apsis

英 ['æpsɪs] 美['æpsɪs]
  • n. 教堂东端之半圆室;[天] 拱点

词态变化


复数: apsides;

英文词源


apsis (n.)
"perigree of the moon, perihelion of a planet" (plural apsides), 1650s, from Latin apsis "arch, vault" (see apse).