[ ap-uh-sen-ter ]
/ ˈæp əˌsɛn tər /

noun Astronomy.

the point in the orbit of a heavenly body farthest from a primary other than the earth or the sun.
Compare pericenter.

Origin of apocenter

First recorded in 1900–05; apo- + center

Related forms

ap·o·cen·tric, adjectiveap·o·cen·tric·i·ty [ap-uh-sen-tris-i-tee] /ˌæp ə sɛnˈtrɪs ɪ ti/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019