WordReference Random House Unabridged Dictionary of American English © 2026
ap•o•cen•ter
(ap′ə sen′tər),USA pronunciation n. [Astron.]
ap′o•cen′tric, adj.
ap•o•cen•tric•i•ty
(ap′ə sen tris′i tē),USA pronunciation n.
- Astronomythe point in the orbit of a heavenly body farthest from a primary other than the earth or the sun. Cf. pericenter.
- 1900–05; apo- + center
'apocenter' also found in these entries (note: many are not synonyms or translations):